如果您发现您在Windows11、Windows 10、Windows 8 或Windows 7中的 Internet 连接突然停止工作，或者您遇到某些网络^(Network)和Internet连接问题，您可能想尝试以下一些故障排除步骤。

修复网络^{(Fix Network)}和Internet连接问题

您可以使用以下方法和工具来修复Windows 11/10网络^(Network)和Internet连接问题：

1. 更新 IP 地址
2. 刷新 DNS 缓存
3. 使用网络^{(Use Network)}和互联网诊断^{(Internet Diagnostic)}和修复工具^{(Repair Tool)}
4. 启用或禁用 IPv6
5. 重置温索克
6. 重置 TCP/IP，
7. 重置主机文件，
8. 将Windows 防火墙^{(Reset Windows Firewall)}设置重置为默认值，
9. 重置您的浏览器
10. 运行网络重置。

这些建议之后也有其他修复。看看他们！

1] IPConfig是^(IPConfig)Windows内置的工具，它显示所有当前TCP/IP网络配置值并刷新动态主机配置协议 DHCP^{(Dynamic Host Configuration Protocol DHCP)}和域名系统 DNS^{(Domain Name System DNS)}设置。您可以通过命令行访问此工具。如果您的 IP 地址错误，那么以这种方式更新您的 IP 地址可能有助于解决您的互联网问题。^{( If you have a bad IP address, then renewing your IP address this way may help solve your internet problems.)}

在开始搜索中键入cmd并按Ctrl-Shift-Enter。如果您愿意，出于好奇，您可以键入ipconfig并按Enter，以查看计算机Internet 协议^{(Internet Protocol)}或 IP 地址的状态。

键入ipconfig /release以释放当前 IP 地址。

接下来，键入ipconfig /renew以获取新的 IP 地址。

如果您在运行“Ipconfig /Renew”命令时收到错误消息，请参阅KB810606。

如果您经常遇到这个问题，那么您可以在每次启动时更新它，方法是创建以下.bat文件并将其放置在您的启动文件夹中。

打开记事本并输入：

ipconfig /release
ipconfig /renew

将其另存为iprenew.bat文件。

阅读^(Read)：如何查找、更新、更改 IP 地址。

2] 通常，互联网连接问题也可以追溯到损坏的DNS缓存。重置或刷新此缓存是解决其中许多问题的简单方法。这是在 Windows 11/10、Windows 8/7 或 Windows Vista 中刷新Windows 11/10 DNS缓存^{(Windows Vista)}的^{(flush Windows DNS cache)(flush Windows DNS cache)}方法。

Start > All Programs > Accessories > Command Prompt。右键单击^{(Right-click)}它并“以管理员身份运行”。^(Run)输入以下内容并回车：

ipconfig /flushdns

您应该能够看到一个确认对话框窗口：

Windows IP 配置。成功刷新 DNS 解析器缓存。^{(Windows IP Configuration. Successfully flushed the DNS Resolver Cache.)}

接下来，键入ipconfig /registerdns并按 Enter。

这会注册您或某些程序可能已记录在您的 Hosts 文件中的任何DNS记录。^(DNS)

以防万一您有兴趣，查看此命令的完整语法类型ipconfig /help 并按 Enter！

3] Windows 11/10/8/7/Vista中的网络和 Internet 诊断和修复工具^{(Network & Internet Diagnostic & Repair Tool)}将帮助您识别阻止网络连接的潜在问题，并自动采取适当的步骤来纠正这些问题。如果网络上的计算机失去Internet连接，您可以以图形方式查看哪个连接断开，然后使用网络^(Network)诊断^{(Diagnostics)}来帮助确定问题的原因并找到可能的解决方案。

要访问它，请打开Control Panel > Network和共享中心^{(Sharing Center)}。在下部，单击疑难解答^{(Troubleshoot Problems)}。从打开的窗口中，您可以选择Internet 连接^{(Internet Connections)}或任何其他要排除和修复的问题。

在“运行”^(Run)框中键入以下命令，然后按 Enter 键^(Enter)直接打开所需的疑难解答：

要打开Internet 连接^{(Connections)}疑难解答：

msdt.exe -id NetworkDiagnosticsWeb

打开传入连接疑难解答^{(Incoming Connections Troubleshooter)}

msdt.exe -id NetworkDiagnosticsInbound

要打开网络适配器^{(Network Adapter)}疑难解答：

msdt.exe -id NetworkDiagnosticsNetworkAdapter

如果疑难解答程序抛出Windows 无法自动将 IP 协议堆栈绑定到网络适配器消息，请转到此处。

4]启用或禁用 IPv6 以解决 Internet 连接问题。

5]  重置Winsock^{(Reset Winsock)}

6]重置TCP / IP，

7]重置主机文件^{(Reset Hosts file)}，

8]将Windows防火墙设置重置为默认值。^{(Reset Windows Firewall settings to default.)}

9]重置^(Reset)您的浏览器。这些帖子将向您展示如何重置 Edge^{(Reset Edge)}、Chrome、Firefox或Internet Explorer

10] Windows 10 中的网络重置功能将帮助您重新安装网络^(Network)适配器并将网络^(Networking) 组件^(Components)重置为原始设置。

11] 尝试NetChecker、 NetAdapter 修复或完整的 Internet 修复工具^{(Complete Internet Repair Tool)}。

12] 如果升级到 Windows 10 后无法连接到 Internet，请参阅此帖子。

13]如果您看到有限的网络连接消息，请转到此处。

14] 如果您收到WiFi 没有有效的 IP 配置错误消息，请参阅此帖子。

15] 如果您收到此网络上的另一台计算机具有相同的 IP 地址消息，请转到此处。

16] 如果您收到启用 Internet 连接共享时发生错误消息，这篇文章可能会对您有所帮助。

17]如果您收到 远程连接未建立错误，请检查此帖子。

18]这篇文章将向您展示如何在Windows中修复未识别的网络。^{(Unidentified Network)}

19] 如果您遇到热点和 Wi-Fi 适配器的 Windows 连接问题，请参阅这篇文章。

20]这篇文章将帮助您解决 Windows无法从路由器获取网络设置^{(Windows can’t get the Network Settings from the router)}错误。

21] 如果以太网连接不起作用，请参阅此帖子。

22]这篇文章将向您展示如何在 Windows 11 中将 Internet 选项重置为默认值。

Hope something helps!

Fix Network & Internet connection problems in Windows 11/10

If you find that your internet connection, in Windows11, Windows 10, Wіndows 8 or Windows 7, has suddenly stopped working or that you are fаcing certain Network and Internеt connectivity problems, here arе a few troubleshooting steps you may want to try.

Fix Network & Internet connection problems

You can use the following methods r tools to fix Network & Internet connection problems in Windows 11/10:

1. Renew IP address
2. Flush DNS cache
3. Use Network & Internet Diagnostic & Repair Tool
4. Enable or Disable IPv6
5. Reset Winsock
6. Reset TCP/IP,
7. Reset Hosts file,
8. Reset Windows Firewall settings to default,
9. Reset your browser
10. Run Network Reset.

These suggestions are followed by other fixes too. Take a look at them!

1] IPConfig is a tool built into Windows, that displays all current TCP/IP network configuration values and refreshes Dynamic Host Configuration Protocol DHCP and Domain Name System DNS settings. You can access this tool via the command line. If you have a bad IP address, then renewing your IP address this way may help solve your internet problems.

Type cmd in start search and press Ctrl-Shift-Enter. If you wish, just out of curiosity, you may type ipconfig and hit Enter, to view the status of the computer’s Internet Protocol or IP address.

Type ipconfig /release to let go of the current IP address.

Next, type ipconfig /renew to obtain a new IP address.

If you get an error message when you Run the “Ipconfig /Renew” command see KB810606.

If you recurrently face this problem, then you can have it renewed on every start-up, by creating the following .bat file and placing it in your startup folder.

Open Notepad and type:

ipconfig /release
ipconfig /renew

Save it as, say, iprenew.bat file.

Read: How to find out, renew, change IP address.

2] Frequently, internet connection problems can also be traced to a corrupted DNS cache. Resetting or Flushing this cache is an easy fix to many of these problems. This is how you can flush Windows DNS cache in Windows 11/10, Windows 8/7 or Windows Vista.

Start > All Programs > Accessories > Command Prompt. Right-click on it and ‘Run As Administrator’. Type the following and hit enter:

ipconfig /flushdns

You should be able to see a confirmation dialog window:

Windows IP Configuration. Successfully flushed the DNS Resolver Cache.

Next, type ipconfig /registerdns and hit Enter.

This registers any DNS records that you or some programs may have recorded in your Hosts file.

Just in case you are interested, to view the complete syntax for this command type ipconfig /help and hit Enter!

3] The Network & Internet Diagnostic & Repair Tool in Windows 11/10/8/7/Vista will help you identify the potential issues preventing network connectivity, and it automatically takes appropriate steps toward correcting them. If a computer on the network loses Internet connectivity, you can graphically see which connection is down and then use Network Diagnostics to help determine the cause of the problem and find possible solutions.

To access it, open Control Panel > Network & Sharing Center. In the lower part, click on Troubleshoot Problems. From the window which opens, you can select Internet Connections or any other issue you want to troubleshoot and repair.

Type the following commands in Run box and hit Enter to open the required Troubleshooters directly:

To open Internet Connections Troubleshooter:

msdt.exe -id NetworkDiagnosticsWeb

To open the Incoming Connections Troubleshooter

msdt.exe -id NetworkDiagnosticsInbound

To open the Network Adapter Troubleshooter:

msdt.exe -id NetworkDiagnosticsNetworkAdapter

Go here if the Troubleshooter throws up Windows couldn’t automatically bind the IP protocol stack to the network adapter message.

4] Enable or Disable IPv6 to solve Internet connectivity problems.

5]  Reset Winsock

6] Reset TCP/IP,

7] Reset Hosts file,

8] Reset Windows Firewall settings to default.

9] Reset your browser. These posts will show you how to Reset Edge, Chrome, Firefox or Internet Explorer

10] The Network Reset feature in Windows 10 will help you reinstall Network adapters and reset Networking Components to original settings.

11] Try NetChecker, NetAdapter Repair or Complete Internet Repair Tool.

12] See this post if you cannot connect to Internet after upgrading to Windows 10.

13] Go here if you see a Limited Network Connectivity message.

14] See this post if you receive a WiFi doesn’t have a valid IP configuration error message.

15] Go here if you receive Another computer on this network has the same IP address message.

16] This post may help you if you receive An error occurred while Internet Connection Sharing was being enabled message.

17] Check this post if you receive The remote connection was not made error.

18] This post will show you how to fix Unidentified Network in Windows.

19] See this post if you face Windows Connectivity issues with Hotspots and Wi-Fi adapters.

20] This post will help you resolve Windows can’t get the Network Settings from the router error.

21] See this post if Ethernet connection is not working.

22] This post will show you how to reset Internet Options to default in Windows 11.

Hope something helps!

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