Firefox是全球互联网冲浪者最喜欢的以隐私为中心的浏览器之一。它支持各种Web标准，如HTML、XML、XHTML、CSS（带扩展）、JavaScript、DOM、MathML、SVG、XSLT和XPath。然而，一些用户在浏览互联网时面临PR_CONNECT_RESET_ERROR Firefox 。PR_CONNECT_RESET_ERROR当您的 PC 成功从服务器站点获得其搜索结果时发生^{(server site)}但无法完全处理它们。如果你面临同样的问题，你并不孤单！在本指南中，您可以了解修复Firefox 连接^{(Firefox connection)} 重置错误^{(reset error)}的故障排除方法。开始了！

如何修复 Firefox 连接重置错误^{(How to Fix Firefox Connection Reset Error)}

以下是在Firefox^(Firefox)上导致此错误的一些可能原因。分析触发错误的因素将帮助您相应地遵循故障排除方法。

• 如果您在防病毒设置中启用了^(Antivirus)TCP 协议过滤^{(TCP protocol filtering )}，最终用户和网络服务器之间的连接将更频繁地中断。这发生在ESET 防病毒^{(ESET antivirus)}程序中。
• 某些临时浏览器缓存^{(temporary browser cache )}可能会干扰新的网络服务器连接，从而导致Firefox出现此错误。
• 当您的antivirus/Windows Defender Firewall保护过度时，最终用户和网络服务器之间的中断将导致此错误。
• 如果您使用的是VPN或代理服务器，^{(Proxy server, )}您的网络服务器可能会因为配置了安全预防措施而面临上述问题。
• 某些受限网络^{(restricted networks)}可能会阻止您访问任何特定的 Web 服务器，从而导致^{(web server)}Firefox出现此错误。
• 过时的浏览器版本、有问题的浏览器扩展^{(outdated version of the browser, problematic browser extensions,)}或错误配置的网络设置^{(misconfigured network settings)}也可能导致此错误。

Firefox最著名的功能之一是其开源功能^{(open-source feature )}，它使全球用户能够编写代码并在插件、主题和扩展方面扩展浏览器的功能。它保证了在线盗版，根据2021 年 12 月^{(December 2021)}的记录，它在最流行的桌面浏览器列表中排名第四，仅次于Google Chrome、Safari和Microsoft Edge。

本节编制了一个故障排除方法列表，用于修复Firefox上的此错误。这些方法按照影响级别^{(impact level)}从基础到高级进行排列。按照相同顺序执行这些方法并检查您是否已解决问题。

初步检查^{(Preliminary Checks)}

修复Firefox 连接^{(Firefox connection)} 重置错误^{(reset error)}的主要故障排除步骤是确保您拥有稳定的网络连接^{(network connection)}。如果您有网络不稳定^{(network instability)}，您将在您访问的任何网站上遇到错误。因此，每当您在Firefox上遇到此错误时，请打开一个新选项卡并搜索^{(tab and search)}另一个网站。如果您在浏览器中访问的所有网站都出现错误，则表明您的网络连接^{(network connection)}不稳定。确保网络速度和带宽^{(network speed and bandwidth)}来修复它。您可以按照以下几个初步步骤来修复此错误。

• 如果您使用旧的、损坏的或不可靠的电缆，互联网连接^{(internet connection)}将不断与设备断开连接。即使您的网速^{(internet speed)}非常高，在断线时您也不会获得不间断的服务。检查连接电缆是否达标^{(Check if the connecting cables are up to the mark)}。
• 如果您有任何网络冲突，您可以通过重新启动路由器来解决它们^{(If you have any network conflicts, you can fix them by restarting the router)}。但是，重新启动路由器将重新启动网络连接^{(network connectivity)}。很少有用户报告说，配置设置中标记的所有更改都会在您重新启动路由器时生效。因此，请按照以下步骤重新启动路由器。

1. 找到路由器背面的 电源按钮^{(Power button)} 。

2. 按一下按钮 将其关闭。^{(turn it off.)}

3. 现在， 断开^(disconnect)路由器电源线^{(Router power cable)} 并  等待电容器完全耗尽电力。

4. 然后， 重新连接^(reconnect) 电源 线^{(power cable)} 并在一分钟后将其打开。 

5.等待^(Wait)网络连接^{(network connection)}重新建立，然后 再次尝试登录^{(try signing in again)}。

如果您仅在一个特定网站上遇到错误，则互联网连接^{(internet connection)}没有问题，您可以按照此处讨论的故障排除方法进行修复。

方法一：清除火狐浏览器缓存^{(Method 1: Clear Firefox Browser Cache)}

损坏的浏览器缓存^{(browser cache)}等临时文件可能会导致最终用户和Web 服务器连接^{(web server connection)}中断。当您上网时，这可能会导致Firefox出现此错误。^(Firefox)尝试清除浏览器缓存^{(browser cache)}并检查是否已修复Firefox 连接^{(Firefox connection)} 重置错误^{(reset error)}。请按照以下步骤操作。

1. 启动 火狐^(Firefox) 浏览器。

2. 现在，单击 下图中突出显示的菜单 图标。^(menu )

3. 在这里， 从下拉列表中选择设置 选项，如图所示。^(Settings )

4. 现在，导航到 左侧窗格中的隐私和安全 部分^{(Privacy & Security )}

5. 向下滚动到 Cookie 和站点数据^{(Cookies and Site Data)} 部分，然后单击 清除数据… ^{(Clear Data… )}选项，如下图所示。

6. 在这里，取消选中 Cookies 和站点数据 ^{(Cookies and Site Data )}框并确保选中 缓存的 Web 内容^{(Cached Web Content)} 框，如下所示。

注意：^(Note:) 取消选中 Cookie 和站点数据^{(Cookies and Site Data)} 将清除Firefox存储的所有 cookie 和站点数据，让您退出网站，并删除离线 Web 内容^{(offline web content)}。而清除 缓存的 Web 内容^{(Cached Web Content)} 不会影响您的登录。

7. 最后，点击 清除 ^(Clear )按钮清除Firefox缓存的 cookie。

8. 然后，单击 管理数据...^{(Manage Data…)} 按钮。

9. 在 搜索网站^{(Search websites)} 字段中输入您要删除其 cookie 的网站名称。

10A。选择网站并单击 删除选定^{(Remove Selected)} 项以仅删除选定的项目。

10B。或者，选择 全部删除^{(Remove All)} 以删除所有 cookie 和存储数据。

11. 最后，单击 保存更改^{(Save Changes)} 按钮。

12. 关闭浏览器并 重新启动^(reboot) 您的 PC^{(your PC)}。

另请阅读：^{(Also Read:)} 如何修复 Firefox 黑屏问题^{(Fix Firefox Black Screen Issue)}

方法 2：更新 Firefox 扩展^{(Method 2: Update Firefox Extensions)}

如果您在浏览器中启用了任何有问题的扩展程序，您可能会遇到Firefox 连接^{(Firefox connection)} 重置问题^{(reset issue)}。要解决它，请更新浏览器中的扩展程序。以下是更新Firefox扩展的一些说明。

1. 单击 Firefox浏览器中的^(Firefox)菜单 ^(Menu )图标  。

2. 点击 加载项和主题^{(Add-ons and themes)} ，如图所示。

3.在这里，单击 左侧窗格中的 扩展 ，然后单击与您的扩展相对应的^{(Extensions )}齿轮图标 ^{(gear icon )}。

4. 现在，选择 检查更新 ^{(Check for Updates )}选项，如图所示。

5A。现在，如果您发现任何更新，请按照 屏幕上的说明更新您的扩展程序^{(on-screen instructions to update your extension)}。

5B。如果没有可用的更新，则会显示未 找到更新^{(No updates found)} 消息。

方法 3：禁用或删除 Firefox 扩展^{(Method 3: Disable or Remove Firefox Extensions)}

如果您没有通过更新Firefox扩展获得任何修复，您可以按照下面提到的步骤禁用它们。

选项 I：禁用扩展^{(Option I: Disable Extensions)}

1. 导航到 Firefox 附加组件和主题^{(Firefox Add-ons and themes)} 页面，如 方法 7^{(Method 7)}所示。

2. 然后，单击 左侧窗格中的 Extensions 并^{(Extensions )}关闭^(Off)扩展 的 切换^(toggle)开关 （例如 Grammarly for Firefox）。

同样，一一禁用所有扩展，并通过反复检查来检查导致问题的原因。

选项二：删除扩展^{(Option II: Remove Extensions)}

1. 前往 Mozilla Firefox > Add-ons and themes > Extensions ，如 方法 7^{(Method 7)}所示。

2. 单击 扩展旁边 的三个点图标 ，然后选择^{(three dots icon )}删除 ^(Remove )选项，如图所示。

另请阅读：^{(Also Read:)} 如何在Google Chrome中清除^{(Google Chrome)}缓存和 Cookie^{(Cache and Cookies)}

方法 4：禁用脱机工作选项^{(Method 4: Disable Work Offline Option)}

您访问过的网页将存储在 Firefox 的缓存中。如果您没有连接到任何网络，您仍然可以使用“脱机工作”选项^{(Work Offline option)}访问该网页。有时，此选项可能会导致此PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}。按照下面提到的步骤禁用脱机工作选项^{(Work Offline option)}。

1.如前所述启动Firefox 。

2. 右键单击​​菜单图标^{(Menu icon)}。

3. 选择菜单栏^{(Menu bar)}。

4. 单击屏幕右上角^{(right corner)}的文件。^(File)

5. 单击“脱机工作”^{(Work Offline)}选项取消选中它。

方法 5：D ^{(Method 5: D)}isable DNS Prefetch

DNS预取功能可能会加快Firefox中的浏览速度。有时当它崩溃时，此功能可能会干扰网站的正常加载并导致Firefox 连接^{(Firefox connection)} 重置问题^{(reset issue)}。尝试按照以下说明禁用DNS预取功能。

1. 打开 Firefox 并 在地址栏中 输入about:config 并按^{(about:config )}Enter 键^{(Enter key)}。

2. 现在，单击 接受风险并继续 ^{(Accept the Risk and Continue )}选项。

3. 在搜索栏中 输入network.dns.disablePrefetch 并按^{(network.dns.disablePrefetch )}Enter 键^{(Enter key)}。

4. 在这里，单击切换按钮^{(toggle button)}将 network.dns.disablePrefetch 从 False 变为 True。

5. 最后， 重新加载站点^{( reload the site)}并检查您是否再次遇到PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}。

另请阅读：^{(Also Read:)} 如何修复 Firefox^{(Fix Firefox)}不播放视频^(Videos)

方法 6：^{(Method 6: D)}启用 IPv6^{(isable IPv6)}

^{(IPV6 protocol)}一些浏览器默认使用IPV6 协议。但是，有时此浏览器可能会干扰您的浏览器，从而导致这些问题。要解决这些错误，请按照以下说明禁用IPV6。

1. 打开 Firefox 并转到 about:config 页面，然后单击 Accept the Risk and Continue 按钮，如图所示

2. 在这里， 从 搜索首选项名称 ^{(Search preference name )}字段中搜索network.dns.disableIPv6  。

3. 现在，通过单击  下面突出显示的切换按钮将设置更改为^(toggle)True  。

4. 最后，重新加载页面^{(reload the page)}。

方法 7：修改不跟踪选项^{(Method 7: Modify Do Not Track Option)}

此选项将向浏览器的标题发送一个信号，不要跟踪您正在访问的网站的 cookie。此功能也可能导致PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}。请按照以下步骤禁用它。

1.如前所述启动Firefox 。

2. 现在，单击屏幕右上角的^{(right corner)}菜单^{(menu )}图标。

3. 在这里，从下拉列表中选择设置选项，如图所示。^{(Settings )}

4. 选择左侧窗格中的隐私和安全^{(Privacy & Security )}部分。

5. 在此处，选择始终^(Always)在向网站发送您不想被跟踪的请勿跟踪信号下^{(Send websites a Do Not Track signal that you don’t want to be tracked)}。

另请阅读：^{(Also Read:)} 修复^{(Fix Server)}Firefox中未找到服务器的错误^{(Found Error)}

Method 8: Reset TCP/IP

很少有用户报告您可以在重置TCP/IP configurationFirefox中修复此错误。按照^(Follow)并执行以下说明的步骤来修复PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}。

1. 按 Windows 键^{(Windows key)}，键入 命令提示符^{(Command Prompt)}，然后单击 以管理员身份运行^{(Run as administrator)}。

2. 现在，在命令窗口^{(command window)} 中一一键入以下 命令^(commands)，并 在每个命令后按Enter 键 ^(Enter )。

ipconfig /release
ipconfig /all
ipconfig /flushdns
ipconfig /renew

3.最后，等待命令执行并 重新启动您的PC^{(reboot your PC)}。

方法 9：删除 Winsock 目录条目^{(Method 9: Remove Winsock Catalog Entries)}

Winsock使您的操作系统可以在您连接到网络时设置TCP/IP connection然而，为已建立的连接创建了几个条目，导致PR_CONNECT_RESET_ERROR Firefox 错误^{(PR_CONNECT_RESET_ERROR Firefox error)}。您可以使用下面讨论的说明清除它们。

1. 导航到搜索菜单^{(search menu)}，键入命令提示符，^{(command prompt,)}然后单击以管理员身份运行^{(Run as administrator)}。

2. 现在，输入下面给出的命令，然后按 Enter^(Enter)。

netsh winsock 重置^{(netsh winsock reset)}

另请阅读：^{(Also Read:)} 修复^(Fix)Firefox上的连接不安全错误^{(Secure Error)}

方法 10：修改 LAN 设置^{(Method 10: Modify LAN Settings)}

几个网络连接^{(network connectivity)}问题可能会导致此PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}，您可以通过重置本地网络设置来修复它们，如下所述。

1. 按 Windows 键^{(Windows key)}，键入 控制面板^{(Control Panel)} 并单击 打开^(Open)。

2. 现在，将 View by 选项设置为 Category。

3. 选择 网络和互联网 ^{(Network and Internet )}设置。

4. 在这里，单击 Internet 选项 ^{(Internet Options )}，如下所示。

5. 现在，在 Internet 属性^{(Internet Properties)} 窗口中，切换到 连接 ^{(Connections )}选项卡。

6. 选择 LAN 设置^{(LAN settings)}，如下所示。

7. 在这里，选中 自动检测设置 ^{(Automatically detect settings )}框并确保 未选中为您的 LAN 使用代理服务器 ^{(Use a proxy server for your LAN )}框。

注意：^(Note:) 您可以在需要时再次启用该选项。

8. 最后，单击“ 确定 ^(OK )”保存更改并检查问题是否已解决。

方法 11：删除 WLAN 配置文件^{(Method 11: Delete WLAN Profiles)}

^(WLAN)每当您连接到任何无线网络时，都会创建WLAN（无线）配置文件。^(Wireless)此配置文件包含唯一的网络名称^{(network name)}、密钥和其他相关设置，可帮助您的系统连接^{(system connect)}到网络。您可以按照以下步骤删除WLAN配置文件并修复^(WLAN)PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}。

1. 同时按下 Windows + R keys 打开 设置^(Settings)。

2. 单击 网络和 Internet^{(Network & Internet)} 设置。

3. 现在，单击左侧窗格中的 Wi-Fi 菜单。

4. 然后，向下滚动，单击 管理已知网络^{(Manage known networks)} 选项。

5.屏幕上将显示您之前成功配对的无线网络列表。^{(wireless network)}单击^(Click)任何似乎不必要的 无线网络，然后选择^{(wireless network)}忘记 ^(Forget )选项。

现在，WLAN 配置文件^{(WLAN profile)}将从您的系统中删除。接下来，连接到网页并检查您是否再次遇到Firefox 连接重置错误^{(connection reset error)}。

另请阅读：^{(Also Read:)} 如何在Chrome中启用^(Chrome)隐身模式^{(Incognito Mode)}

方法 12：禁用协议过滤（如果适用）^{(Method 12: Disable Protocol Filtering (If Applicable))}

如果您在 PC 上安装了ESET等杀毒程序，则必须确保您是否在高级^(Advanced)设置中启用了TCP 协议过滤^{(TCP protocol filtering )}选项。请考虑按照以下说明关闭该功能。

注意：^{(Note: )}如果您正在使用另一个部署了协议过滤选项的^{(Protocol filtering)}防病毒程序^{(antivirus program)}，请按照相应的步骤进行操作。

1. 启动ESET 防病毒程序^{(ESET antivirus program)}并切换到设置^{(Setup )}部分，如下所示。

2. 现在，点击屏幕右下角的高级设置选项，如上图所示。^{(Advanced setup )}

注意：^{(Note: )}打开ESET Antivirus 程序^{(ESET Antivirus program)}并按F5直接导航到高级设置^{(Advanced setup)}页面。

3. 在这里，单击左窗格中的WEB AND EMAIL部分，如图所示。

4. 现在，前往PROTOCOL FILTERING部分并关闭启用应用程序协议内容过滤^{( Enable application protocol content filtering )}选项，如图所示。

5. 最后，点击OK保存更改。

检查您是否已修复PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}。

方法 13：禁用 VPN 和代理^{(Method 13: Disable VPN and Proxy)}

按照以下步骤禁用VPN 和代理^{(VPN and proxy)}。

第 I 步：禁用 VPN^{(Step I: Disable VPN)}

如果您使用的是VPN 客户端^{(VPN client)}，请尝试从系统中禁用它并检查Firefox 连接^{(Firefox connection)} 重置错误^{(reset error)}是否已修复。按照下面提到的步骤禁用系统中的VPN 客户端^{(VPN client)}。

1. 按 Windows 键^{(Windows key)}， 在Windows 搜索栏中^{(Windows Search Bar)}键入 VPN 设置^{(VPN Settings)}，然后单击 打开^(Open)。

2. 在 设置^(Settings) 窗口中，选择 已连接的 VPN ^{(Connected VPN )}（例如 vpn2）。 

3. 单击 断开连接^(Disconnect) 按钮。

4. 现在， 关闭^(Off)高级选项^{(Advanced Options)} 下  以下 VPN 选项^{(VPN options)}的切换开关：

• 允许通过计量网络使用 VPN^{(Allow VPN over metered networks)}
• 漫游时允许 VPN^{(Allow VPN while roaming)}

另请阅读：^{(Also Read: )}如何修复 Chrome 内存不足

第二步：禁用代理^{(Step II: Disable Proxy)}

禁用代理也可能有助于修复Firefox 连接^{(Firefox connection)} 重置问题^{(reset issue)}。请按照以下步骤操作。

1. 同时按下 Windows + I keys 打开 设置^(Settings)。

2. 然后，打开它，单击 网络和 Internet^{(Network & Internet)} 设置。

3. 转到 左侧窗格中的代理 选项卡^(Proxy )

4. 在这里，关闭以下设置。

• 自动检测设置^{(Automatically detect settings)}
• 使用设置脚本^{(Use setup script)}
• 使用代理服务器^{(Use a proxy server)}

5. 现在，重新加载网页并检查PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}是否已修复。

方法 14：增加最大传输单元 (MTU)^{(Method 14: Increase Maximum Transmission Unit (MTU))}

您可以通过增加最大传输单元 (MTU)^{(Maximum Transmission Unit (MTU) )}和TCP 窗口接收 (RWIN)^{(TCP Window Receive (RWIN) )}参数来提高互联网速度。按照下面提到的步骤来实施它们。

1. 同时按住Windows + I keys 打开设置^(Settings)。

2. 现在，单击网络和 Internet^{(Network & Internet)}，如图所示。

3. 现在，记下您所连接的网络名称^{(network name)}( dharani) 。

4. 现在，以管理员身份打开命令提示符^{(Command Prompt as administrator)} 并键入以下命令。然后，按 Enter 键^{(Enter key)}。

netsh interface IPv4 set subinterface “dharani” mtu=1472 store=persistent

注意：^{(Note: )}将引用的文本替换为您的网络名称^{(network name)}。

检查您是否已修复PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}。

另请阅读：^{(Also Read:)}修复 Google Chrome 未更新

方法 15：取消选中 AppEx 网络加速器功能（适用于以太网适配器）^{(Method 15: Uncheck AppEx Networks Accelerator Feature (For Ethernet Adapter))}

如果您使用有线连接，AppEx 网络加速器功能^{(AppEx Networks Accelerator Feature)}会降低网络速度^{(network speed)}，从而导致Firefox 连接^{(Firefox connection)} 重置错误^{(reset error)}。使用以下步骤禁用此功能。

1. 导航到设置^(Settings)，然后是网络和互联网^{(Network & Internet )}，就像您在以前的方法中所做的那样。

2. 现在，单击以太网^{(Ethernet )}选项卡并选择相关设置^{(Related settings )}下的更改适配器选项^{(Change adapter options )}，如下所示。

3. 然后，右键单击您的网络并单击^{(network and click)}属性，^{(Properties )}如图所示。

4. 在Networking选项卡中，搜索AppEx Networks Accelerator 并取消选中它。^{( AppEx Networks Accelerator and uncheck it.)}

5. 最后，检查您是否已解决此问题。

方法 16：更新或重新安装网络驱动程序^{(Method 16: Update or Reinstall Network Drivers)}

请按照以下步骤更新或重新安装网络驱动程序。

选项 I：更新驱动程序^{(Option I: Update Drivers)}

如果您系统中的当前驱动程序与浏览器文件不兼容/过时，那么您将面临PR_CONNECT_RESET_ERROR Firefox 错误^{(PR_CONNECT_RESET_ERROR Firefox error)}。因此，建议您更新您的设备和驱动程序^{(device and drivers)}，以防止Firefox 连接^{(Firefox connection)} 重置问题^{(reset problem)}。

 1.在 Windows 10 搜索菜单中键入 设备管理器。^{(Device Manager)}

2. 双击 网络适配器^{(Network adapters)} 将其展开。

3. 右键单击​​您的 无线网络驱动程序 ^{(wireless network driver )}（例如 Qualcomm Atheros QCA9377 无线网络适配器^{( Qualcomm Atheros QCA9377 Wireless Network Adapter)}）并选择 更新驱动程序^{(Update driver)}，如下图所示。

4. 接下来，单击 自动搜索驱动程序 ^{(Search automatically for drivers )}以自动下载并安装最佳可用驱动程序。

5A。现在，如果驱动程序未更新，驱动程序将更新并安装到最新版本。

5B。如果它们已经处于更新阶段，则会显示消息 “您的设备的最佳驱动程序已安装” ^{(The best drivers for your device are already installed )}。

6. 单击 关闭 ^(Close )按钮退出窗口并 重新启动您的 PC^{( restart your PC)}。

选项二：重新安装驱动程序^{(Option II: Reinstall Drivers)}

如果更新驱动程序没有解决Firefox 连接^{(Firefox connection)} 重置错误^{(reset error)}和无响应问题，您可以卸载网络驱动程序并重新安装它们。然后，按照下面提到的步骤执行相同的步骤来修复PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}。

1.使用上述步骤启动设备管理器。^{(Device Manager )}

2.双击展开网络适配器。^{(Network adapters )}

3. 现在，右键单击驱动程序^{(driver )}并选择卸载设备^{(Uninstall device)}。

4. 现在，屏幕上将显示警告提示。^{(warning prompt)}选中删除此设备的驱动程序软件^{(Delete the driver software for this device)}复选框，然后单击卸载^(Uninstall)确认提示。

5. 访问制造商的网站^{(manufacturer’s website )}（例如英特尔^(Intel)）手动下载驱动程序。

6. 下载后，双击下载的文件^{(downloaded file)}并按照给定的说明进行安装。

另请阅读：^{(Also Read:)} 修复 Crunchyroll 无法^{(Fix Crunchyroll)}在Chrome上运行^(Chrome)

方法 17：更新 Firefox^{(Method 17: Update Firefox)}

过时版本的浏览器也可能导致此PR_CONNECT_RESET_ERROR Firefox 错误^{(PR_CONNECT_RESET_ERROR Firefox error)}。Firefox经常发布更新以修复其中的错误。因此^(Hence)，请按照以下说明更新Firefox以修复Firefox 连接^{(Firefox connection)} 重置问题^{(reset issue)}。

1. 转到 Firefox 浏览器并选择 菜单^(menu) 图标。

2. 现在，选择 帮助 ^(Help )选项，如下所示。

3. 然后，点击 关于 Firefox ^{(About Firefox )}，如下图所示。

4A。如果您的Firefox是最新的，它会显示 Firefox is up to date。

4B。如果有可用更新，请按照 屏幕上的说明更新 Firefox^{(on-screen instructions to update Firefox)}。

方法18：将网站加入白名单或暂时禁用杀毒（不推荐）^{(Method 18: Whitelist Website or Disable Antivirus Temporarily (Not Recommended))}

有时，系统中的防病毒程序^{(antivirus program)}可能会阻止您访问任何URL，将其视为威胁。要解决此PR_CONNECT_RESET_ERROR Firefox 问题^{(PR_CONNECT_RESET_ERROR Firefox issue)}，您可以按照以下说明将网站列入白名单或禁用防病毒程序^{(antivirus program)}。

注意：^(Note:) 这里 以Avast Free Antivirus 为例。您可以根据您的防病毒应用程序执行这些步骤。

选项 I：白名单网站 URL^{(Option I: Whitelist Website URL)}

如果您不希望Avast阻止任何特定网站，您还可以按照以下步骤将URL列入白名单并修复^(URL)Firefox 连接^{(Firefox connection)} 重置错误^{(reset error)}。

1. 导航到 Search Menu，键入 Avast 并单击 Open，如图所示。

2. 点击右上角的 菜单 ^(Menu )选项。

3. 接下来，从下拉列表中单击 设置 。^(Settings )

4. 在 General 选项卡中， ^{(General tab, )}切换到 Exceptions 选项卡并单击 ADD ADVANCED EXCEPTION ，如下图所示。

5. 现在，在新窗口中，单击 Website/Domain ，如下所示。

6. 现在，将 URL 粘贴到 Type in url path 部分下。接下来，单击 添加例外^{(ADD EXCEPTION)} 选项。参考图片。

7. 如果您想从Avast 白名单中删除^{(Avast whitelist)}URL，请转到 Settings > General > Exceptions 菜单，然后单击 垃圾箱图标^{(Trash icon)} ，如下图所示。

另请阅读：^{(Also Read:)} 如何在Chrome中通过HTTPS启用^(HTTPS)DNS

选项二：暂时禁用防病毒软件^{(Option II: Disable Antivirus Temporarily)}

如果您没有通过在防病毒程序中向^{(antivirus program)}URL添加例外来修复Firefox 连接^{(Firefox connection)} 重置错误^{(reset error)}，则可以按照以下说明执行步骤来禁用它们。

1. 导航 ^(Navigate )到任务栏中的防^(Taskbar)病毒图标^{(Antivirus icon)}并 右键单击 ^{(right-click )}它。

2. 现在，选择 Avast shields 控制 ^{(Avast shields control )}选项。

3. 选择下面给出的任何选项以暂时禁用Avast 。

• 禁用 10 分钟^{(Disable for 10 minutes)}
• 禁用 1 小时^{(Disable for 1 hour)}
• 禁用直到计算机重新启动^{(Disable until computer is restarted)}
• 永久禁用^{(Disable permanently)}

4. 现在，回到主窗口。在这里，您已关闭Avast的所有屏蔽。要激活设置，请单击 TURN ON。

推荐的：^{(Recommended:)}

• 如何下载适用于Windows 11的^{(Windows 11)}谷歌地图^{(Download Google Maps)}
• ^{(Fix RESULT_CODE_HUNG)}修复Chrome 和 Edge^{(Chrome and Edge)}上的RESULT_CODE_HUNG
• 如何在没有 Gmail 的情况下创建 YouTube 帐户^{(YouTube Account Without Gmail)}
• 如何修复 Firefox^{(Fix Firefox)}不加载^(Loading)页面

我们希望本指南对您有所帮助，您可以修复Firefox 连接重置^{(Firefox connection reset)}错误。让我们知道哪种方法最适合您。此外，如果您对本文有任何疑问/建议，请随时将它们放在评论部分。

Fix Firefox Connection Reset Error

Firefox is оne of the moѕt preferred privacy-centric browsers used bу internet surferѕ worldwide. It supports various Web standards like HTML, XML, XHΤML, CSS (with extensions), JavaScript, DOM, MathML, SVG, XSLT, and XPath. Yet, seνerаl users fаce PR_CОNNECT_RESET_ERROR Firefox while browsing the internet. PR_СONNECT_RESET_ERROR occurs when your PC successfully attaіned its search reѕults from the server sitе but could not process them comрletely. If you face the same issυe, you are not alone! In this guide, you can learn the troubleshooting mеthods to fix Firefox connection reset еrror. Here we go!

How to Fix Firefox Connection Reset Error

Here are some possible reasons that may cause SSL_ERROR_NO_CYPHER_OVERLAP error on Firefox. Analyzing the factors that trigger the error will help you follow the troubleshooting methods accordingly.

• If you have enabled TCP protocol filtering in your Antivirus settings, the connection between the end-user and the webserver will be interrupted more often. This happens in the ESET antivirus program.
• Certain temporary browser cache may interfere with new webserver connections leading to this error on Firefox.
• When your antivirus/Windows Defender Firewall is overprotective, interruptions between the end-user and the webserver will lead to this error.
• If you are using a VPN or Proxy server, your web server might face the said problem due to security precautions configured to it.
• Some restricted networks might prevent you from accessing any particular web server, causing this error on Firefox.
• An outdated version of the browser, problematic browser extensions, or misconfigured network settings may also cause this error.

One of the best-known features of Firefox is its open-source feature that enables users worldwide to write code and extend the functionality of the browser in terms of add-ons, themes, and extensions. It guarantees online piracy and, as per the December 2021 record, stands fourth in the list of most popular desktop browsers after Google Chrome, Safari, and Microsoft Edge.

This section has compiled a list of troubleshooting methods to fix this error on Firefox. The methods are arranged according to the impact level from basic to advanced. Follow the methods in the same order and check if you have fixed the issue.

Preliminary Checks

The primary troubleshooting step to fix Firefox connection reset error is to ensure that you have a stable network connection. If you have network instability, you will face an error on any website you access. Therefore, whenever you encounter this error on Firefox, open a new tab and search for another website. If you face the error in all the websites you access in the browser, this indicates your network connection is not stable. Ensure the network speed and bandwidth to fix it. Here are a few more preliminary steps you can follow to fix this error.

• If you use an old, damaged, or unreliable cable, the internet connection will keep disconnecting from the device. Even if your internet speed is very high, you will not get uninterrupted service when the wires are broken. Check if the connecting cables are up to the mark.
• If you have any network conflicts, you can fix them by restarting the router. However, restarting the router will re-initiate the network connectivity. Few users have reported that all the changes marked in the configuration settings will be effective in action when you restart the router. Therefore, follow the below-mentioned steps to restart your router.

1. Find the Power button at the back of your router.

2. Press the button once to turn it off.

3. Now, disconnect your Router power cable and wait until the power is entirely drained from the capacitors.

4. Then, reconnect the power cable and switch it on after a minute. 

5. Wait until the network connection is re-established and try signing in again.

If you face the error only on one particular website, there is no issue with the internet connection, and you can follow the troubleshooting methods discussed here to fix them.

Method 1: Clear Firefox Browser Cache

Temporary files like corrupt browser cache might cause interruptions in the end-user and the web server connection. This may lead to this error on Firefox when you surf the internet. Try clearing the browser cache and check if you have fixed Firefox connection reset error. Follow the below steps.

1. Launch the Firefox browser.

2. Now, click on the menu icon as highlighted in the pic below.

3. Here, select the Settings option from the drop-down list as shown.

4. Now, navigate to the Privacy & Security section in the left pane

5. Scroll down to the Cookies and Site Data section and click on Clear Data… option as shown in the pic below.

6. Here, uncheck the Cookies and Site Data box and make sure you check the Cached Web Content box, as shown below.

Note: Unchecking Cookies and Site Data will clear all cookies and site data stored by Firefox, sign you out of websites, and remove offline web content. Whereas clearing Cached Web Content will not affect your logins.

7. Finally, click on the Clear button to clear the Firefox cached cookies.

8. Then, click on the Manage Data… button.

9. Type the site name in the Search websites field whose cookies you want to remove.

10A. Select the websites and click on Remove Selected to remove only the selected items.

10B. Alternatively, select Remove All to remove all cookies and storage data.

11. Finally, click on the Save Changes button.

12. Close the browser and reboot your PC.

Also Read: How To Fix Firefox Black Screen Issue

Method 2: Update Firefox Extensions

If you have any problematic extensions enabled in your browser, you may face Firefox connection reset issue. To resolve it, update the extensions in your browser. Here are a few instructions to update Firefox extensions.

1. Click on the Menu icon in the Firefox browser.

2. Click Add-ons and themes as shown.

3. Here, click on Extensions in the left pane, and click on the gear icon corresponding to your extension.

4. Now, select the Check for Updates option as shown.

5A. Now, if you found any updates, follow the on-screen instructions to update your extension.

5B. If there is no update available, then it will display No updates found message.

Method 3: Disable or Remove Firefox Extensions

If you did not attain any fix by updating your Firefox extensions, you can disable them by following the below-mentioned steps.

Option I: Disable Extensions

1. Navigate to Firefox Add-ons and themes page as shown in Method 7.

2. Then, click on Extensions in the left pane and switch Off the toggle for the extensions (e.g. Grammarly for Firefox).

Likewise, disable all the extensions one by one and check which is causing the issue by checking it repeatedly.

Option II: Remove Extensions

1. Go to the Mozilla Firefox > Add-ons and themes > Extensions as illustrated in Method 7.

2. Click on the three dots icon next to the extension and select the Remove option as shown.

Also Read: How to Clear Cache and Cookies in Google Chrome

Method 4: Disable Work Offline Option

The web pages you have visited will be stored in Firefox’s cache. If you are not connected to any network, you can still visit that webpage using the Work Offline option. Sometimes, this option may lead to this PR_CONNECT_RESET_ERROR Firefox issue. Follow the below-mentioned steps to disable the Work Offline option.

1. Launch Firefox as done earlier.

2. Right-click on the Menu icon.

3. Select Menu bar.

4. Click File in the top right corner of the screen.

5. Click on the Work Offline option to uncheck it.

Method 5: Disable DNS Prefetch

DNS prefetching feature may speed up browsing in Firefox. Sometimes when it crashes, this feature might interfere with the normal loading of sites and lead to Firefox connection reset issue. Try to disable DNS prefetching feature as instructed below.

1. Open Firefox and type about:config in the address bar and hit the Enter key.

2. Now, click on Accept the Risk and Continue option.

3. Type network.dns.disablePrefetch in the search bar and hit Enter key.

4. Here, click on the toggle button to turn the network.dns.disablePrefetch from False to True.

5. Finally, reload the site and check if you face PR_CONNECT_RESET_ERROR Firefox issue again.

Also Read: How to Fix Firefox Not Playing Videos

Method 6: Disable IPv6

IPV6 protocol is used as default by several browsers. Yet, sometimes this browser may interfere with your browser, causing these issues. To resolve the errors, disable IPV6 as instructed below.

1. Open Firefox and go to about:config page, then click on Accept the Risk and Continue button as shown

2. Here, search for network.dns.disableIPv6 from the Search preference name field.

3. Now, change the setting to True by clicking on the toggle button as highlighted below.

4. Finally, reload the page.

Method 7: Modify Do Not Track Option

This option will send a signal to the browser’s header not to track the cookies of the website you are visiting. This feature may also cause PR_CONNECT_RESET_ERROR Firefox issue. Follow the below steps to disable it.

1. Launch Firefox as done earlier.

2. Now, click on the menu icon at the top right corner of the screen.

3. Here, select the Settings option from the drop-down list as shown.

4. Select Privacy & Security section in the left pane.

5. Here, select Always under Send websites a Do Not Track signal that you don’t want to be tracked.

Also Read: Fix Server Not Found Error in Firefox

Method 8: Reset TCP/IP

Few users have reported that you could fix this error in Firefox when resetting the TCP/IP configuration. Follow & implement the below-instructed steps to fix PR_CONNECT_RESET_ERROR Firefox issue.

1. Hit the Windows key, type Command Prompt, and click on Run as administrator.

2. Now, type the following commands one by one in the command window and hit Enter after each command.

ipconfig /release
ipconfig /all
ipconfig /flushdns
ipconfig /renew

3. Finally, wait for the commands to be executed and reboot your PC.

Method 9: Remove Winsock Catalog Entries

Winsock enables your OS to set a TCP/IP connection whenever you connect to the network. Yet, several entries are created for established connections leading to PR_CONNECT_RESET_ERROR Firefox error. You can clear them by using the below-discussed instructions.

1. Navigate to the search menu, type command prompt, and click Run as administrator.

2. Now, type the command given below and hit Enter.

netsh winsock reset

Also Read: Fix Your Connection is not Secure Error on Firefox

Method 10: Modify LAN Settings

Several network connectivity issues may lead to this PR_CONNECT_RESET_ERROR Firefox issue, and you can fix them by resetting local network settings, as discussed below.

1. Press the Windows key, type Control Panel and click on Open.

2. Now, set the View by option to Category.

3. Select the Network and Internet settings.

4. Here, click on Internet Options as shown below.

5. Now, in the Internet Properties window, switch to the Connections tab.

6. Select LAN settings, as highlighted below.

7. Here, check the box Automatically detect settings and ensure Use a proxy server for your LAN box is unchecked.

Note: You can enable the option again when you need it.

8. Finally, click on OK to save the changes and check if the issue is resolved.

Method 11: Delete WLAN Profiles

WLAN (Wireless) profiles will be created whenever you connect to any wireless network. This profile contains a unique network name, keys, and other related settings that help your system connect to the network. You can remove WLAN profiles by following the below-mentioned steps and fix PR_CONNECT_RESET_ERROR Firefox issue.

1. Hit the Windows + R keys simultaneously to open Settings.

2. Click on the Network & Internet setting.

3. Now, click on the Wi-Fi menu from the left pane.

4. Then, scroll down, click on the Manage known networks option.

5. Here a list of wireless networks you successfully paired up earlier will be displayed on the screen. Click on any wireless network that seems unnecessary and select the Forget option.

Now, the WLAN profile will be removed from your system. Next, connect to a web page and check if you face Firefox connection reset error again.

Also Read: How to Enable Incognito Mode in Chrome

Method 12: Disable Protocol Filtering (If Applicable)

If you have installed some antivirus program like ESET on your PC, you must ensure whether you have enabled the TCP protocol filtering option in Advanced settings. Consider turning off the feature as instructed as follows.

Note: If you are using another antivirus program that deploys a Protocol filtering option, follow the steps accordingly.

1. Launch the ESET antivirus program and switch to the Setup section as shown below.

2. Now, click on the Advanced setup option at the bottom right corner of the screen, as shown above.

Note: Open the ESET Antivirus program and hit F5 to directly navigate to the Advanced setup page.

3. Here, click on the WEB AND EMAIL section in the left pane as depicted.

4. Now, head towards the PROTOCOL FILTERING section and toggle off the Enable application protocol content filtering option as shown.

5. Finally, click on OK to save the changes.

Check if you have fixed PR_CONNECT_RESET_ERROR Firefox issue.

Method 13: Disable VPN and Proxy

Follow these steps to disable VPN and proxy.

Step I: Disable VPN

If you are using a VPN client, try disabling it from the system and check if Firefox connection reset error is fixed or not. Follow the below-mentioned steps to disable the VPN client in your system .

1. Hit the Windows key, type VPN Settings in the Windows Search Bar, and click on Open.

2. In the Settings window, select the Connected VPN (e.g. vpn2). 

3. Click on the Disconnect button.

4. Now, switch Off the toggle for the following VPN options under Advanced Options:

• Allow VPN over metered networks
• Allow VPN while roaming

Also Read: How to Fix Chrome Ran Out of Memory

Step II: Disable Proxy

Disabling proxy may also help in fixing Firefox connection reset issue. Follow the below steps.

1. Press the Windows + I keys simultaneously to open Settings.

2. Then, to open it, click on the Network & Internet setting.

3. Go to the Proxy tab on the left pane

4. Here, toggle OFF the following settings.

• Automatically detect settings
• Use setup script
• Use a proxy server

5. Now, reload the web page and check if PR_CONNECT_RESET_ERROR Firefox issue is fixed.

Method 14: Increase Maximum Transmission Unit (MTU)

You can increase the internet speed by increasing Maximum Transmission Unit (MTU) and TCP Window Receive (RWIN) parameters. Follow the below-mentioned steps to implement them.

1. Press and hold Windows + I keys together to open Settings.

2. Now, click on Network & Internet as shown.

3. Now, note down the network name (dharani) under which you are connected.

4. Now, open Command Prompt as administrator and type the following command. Then, hit Enter key.

netsh interface IPv4 set subinterface “dharani” mtu=1472 store=persistent

Note: Replace the quoted text with your network name.

Check if you have fixed PR_CONNECT_RESET_ERROR Firefox issue.

Also Read: Fix Google Chrome Not Updating

Method 15: Uncheck AppEx Networks Accelerator Feature (For Ethernet Adapter)

If you use a wired connection, the AppEx Networks Accelerator Feature slows down the network speed, thus leading to Firefox connection reset error. Disable this feature by using the following steps.

1. Navigate to Settings, followed by Network & Internet as you did in previous methods.

2. Now, click on the Ethernet tab and select Change adapter options under Related settings as shown below.

3. Then, right-click on your network and click on Properties as shown.

4. In the Networking tab, search for AppEx Networks Accelerator and uncheck it.

5. Finally, check if you have fixed this issue.

Method 16: Update or Reinstall Network Drivers

Follow these steps to update or reinstall network drivers.

Option I: Update Drivers

If the current drivers in your system are incompatible/outdated with the browser files, then you will face PR_CONNECT_RESET_ERROR Firefox error. Therefore, you are advised to update your device and drivers to prevent Firefox connection reset problem.

1. Type Device Manager in the Windows 10 search menu.

2. Double-click on Network adapters to expand it.

3. Right-click on your wireless network driver (e.g. Qualcomm Atheros QCA9377 Wireless Network Adapter) and select Update driver, as depicted below.

4. Next, click on Search automatically for drivers to automatically download and install the best available driver.

5A. Now, the drivers will update and install to the latest version, if they are not updated.

5B. If they are already in an updated stage, the message saying The best drivers for your device are already installed will be shown.

6. Click on the Close button to exit the window and restart your PC.

Option II: Reinstall Drivers

If updating drivers did not fix Firefox connection reset error & not responding issue, you can uninstall the network drivers and install them again. Then, follow the below-mentioned steps to implement the same to fix PR_CONNECT_RESET_ERROR Firefox issue.

1. Launch the Device Manager using the steps mentioned above.

2. Expand Network adapters by double-clicking on it.

3. Now, right-click on the driver and select Uninstall device.

4. Now, a warning prompt will be displayed on the screen. Check the box Delete the driver software for this device and confirm the prompt by clicking Uninstall.

5. Visit the manufacturer’s website ( e.g. Intel) to download the driver manually.

6. Once downloaded, double-click on the downloaded file and follow the given instructions to install it.

Also Read: Fix Crunchyroll Not Working on Chrome

Method 17: Update Firefox

An outdated version of the browser may also cause this PR_CONNECT_RESET_ERROR Firefox error. Firefox often releases updates to fix bugs in it. Hence, update Firefox to fix Firefox connection reset issue as instructed below.

1. Go to Firefox browser and select the menu icon.

2. Now, select the Help option as highlighted below.

3. Then, click on About Firefox as shown below.

4A. If your Firefox is up-to-date, it will display Firefox is up to date.

4B. If an update is available, follow the on-screen instructions to update Firefox.

Method 18: Whitelist Website or Disable Antivirus Temporarily (Not Recommended)

Sometimes, the antivirus program in your system might prevent you from accessing any URL, considering it as a threat. To resolve this PR_CONNECT_RESET_ERROR Firefox issue, you can either whitelist the website or disable the antivirus program as instructed below.

Note: Here, Avast Free Antivirus is taken as an example. You can follow the steps according to your antivirus application.

Option I: Whitelist Website URL

If you do not want Avast to block any specific website, you can also whitelist the URL by following the below-mentioned steps and fix Firefox connection reset error.

1. Navigate to the Search Menu, type Avast and click on Open, as shown.

2. Click on the Menu option at the top right corner.

3. Next, click on Settings from the drop-down list.

4. In the General tab, switch to the Exceptions tab and click on ADD ADVANCED EXCEPTION as illustrated below.

5. Now, in the new window, click on Website/Domain as highlighted below.

6. Now, paste the URL under the Type in url path section. Next, click on ADD EXCEPTION option. Refer to the pic.

7. If you want to remove the URL from the Avast whitelist, go to the Settings > General > Exceptions menu and click on the Trash icon as depicted below.

Also Read: How to Enable DNS over HTTPS in Chrome

Option II: Disable Antivirus Temporarily

If you did not fix Firefox connection reset error by adding an exception to the URL in your antivirus program, you could disable them by implementing the steps as instructed below.

1. Navigate to the Antivirus icon in the Taskbar and right-click on it.

2. Now, select the Avast shields control option.

3. Select any option given below to disable Avast temporarily.

• Disable for 10 minutes
• Disable for 1 hour
• Disable until computer is restarted
• Disable permanently

4. Now, go back to the main window. Here, you have turned off all shields from Avast. To activate the settings, click on TURN ON.

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We hope that this guide was helpful and you could fix Firefox connection reset error. Let us know which method worked for you the best. Also, if you have any queries/suggestions regarding this article, then feel free to drop them in the comments section.

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