互联网^(Internet)连接问题？DNS缓存损坏？面临DNS 问题或问题^{(DNS issues or problems)}？也许您需要刷新 Windows DNS 缓存^{(flush Windows DNS Cache)}。如果您的计算机发现难以访问某个网站或服务器，则问题可能是由于本地DNS缓存损坏。有时缓存不好的结果，可能是由于DNS 缓存中毒和欺骗^{(DNS Cache Poisoning and Spoofing)}，因此需要从缓存中清除，以使您的Windows计算机与主机正确通信。

通常，您可以轻松刷新caches in Windows 11/10中的三种类型的缓存：

1. 内存缓存^{(Memory Cache)}
2. DNS缓存
3. 缩略图缓存^{(Thumbnails Cache)}

清除内存缓存^{(Memory Cache)}可以释放一些系统内存，而清除缩略图缓存^{(Thumbnail Cache)}可以释放硬盘空间。清除DNS 缓存^{(DNS Cache)}可以解决您的互联网连接问题。以下是在Windows 11^{(Windows 11)}、Windows 10、Windows 8 或 Windows 7中刷新DNS缓存的方法。

在 Windows 11/10 中刷新 DNS 缓存

要在Windows 11/10中刷新DNS 缓存^{(DNS Cache)}，您需要：

1. 以管理员身份打开管理命令提示符窗口
2. 键入ipconfig /flushdns并按 Enter
3. 您应该看到 - Windows IP 配置^{(Windows IP Configuration)}。成功刷新DNS 解析器缓存^{(DNS Resolver Cache)}
4. 退出 CMD
5. 您的DNS缓存应该已重置。

让我们更详细地了解一下。

您需要打开一个管理命令提示符窗口。在搜索框中，键入cmd。然后，右键单击它并选择“以管理员身份运行”选项。^(Run)或者，您也可以从WinX菜单打开提升的命令提示符。

接下来，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 Configuration. Successfully flushed the DNS Resolver Cache.

我们的免费软件FixWin for Windows 10，让您一键刷新DNS缓存等。

阅读：^(Read:)如何清除或刷新 Google Chrome DNS 缓存

显示 DNS 缓存

如果您想确认DNS缓存是否已被清除，您可以键入以下命令并按Enter 键^(Enter)：

ipconfig /displaydns

这将显示 DNS 缓存^{(display the DNS cache)}条目（如果有）。

关闭或打开 DNS 缓存

要关闭特定会话的DNSnet stop dnscache 缓存，请键入并按 Enter。

要打开 DNS 缓存，请键入net start dnscache 并按 Enter。

当然，当您重新启动计算机时，无论如何都会打开 DNC 缓存。^{(Of course, when you restart the computer, the DNC caching will, in any case, be turned on.)}

注意^(NOTE)：这是一个Batch File to Release TCP/IP, Flush DNS, Reset Winsock, Reset Proxy。

禁用 DNS 缓存

如果出于某种原因您希望禁用DNS缓存，请在开始搜索中键入 services 并按Enter打开Services Manager。在这里找到DNS 客户端^{(DNS Client)}服务。

The DNS Client service (dnscache) caches Domain Name System (DNS) names and registers the full computer name for this computer. If the service is stopped, DNS names will continue to be resolved. However, the results of DNS name queries will not be cached and the computer’s name will not be registered. If the service is disabled, any services that explicitly depend on it will fail to start.

双击它以打开其属性^(Properties)框。此处将其启动类型从Manual更改为Disabled。如果禁用DNS 客户端^{(DNS Client)}服务，DNS 查找^{(DNS Lookups)} 可能需要更长时间。

您可能还会对这些资源感兴趣：^{(These resources may also interest you:)}

1. 如何重置 Winsock^{(reset Winsock)}和重置 TCP/IP
2. 如何重置 WinHTTP 代理服务器设置。
3. 如何在 Windows 中更改 DNS 设置^{(How to change DNS settings in Windows)}
4. 通过更改 DNS 设置管理 Web 浏览速度
5. 检查您的 DNS 设置是否已被盗用。

How to Clear, Reset, Flush DNS Cache in Windows 11/10

Internet cоnnection problems? DNS cache corrupted? Facing DNS issues or problems? Maybe you need to flush Windows DNS Cache. If your computer is finding it difficult to reach a certain website or server, the problem may be due to a corrupt local DNS cache. Sometimes bad results are cached, maybe due to DNS Cache Poisoning and Spoofing, and therefore need to be cleared from the cache to allow your Windows computer to communicate with the host correctly.

Typically, there are three types of caches in Windows 11/10 that you can flush easily:

1. Memory Cache
2. DNS Cache
3. Thumbnails Cache

Clearing the Memory Cache can free up some system memory while clearing the Thumbnail Cache can free up space in your hard disk. Clearing the DNS Cache can fix your internet connection problem. Here’s how you can flush the DNS cache in Windows 11, Windows 10, Windows 8 or Windows 7.

Flush DNS Cache in Windows 11/10

To flush the DNS Cache in Windows 11/10 you need to:

1. Open an administrative command prompt window as an administrator
2. Type ipconfig /flushdns and hit Enter
3. You should see – Windows IP Configuration. Successfully flushed the DNS Resolver Cache
4. Exit CMD
5. Your DNS cache should have been reset.

Let us see it in a bit more detail.

You need to open an administrative command prompt window. In search box, type cmd. Then, right-click on it and choose ‘Run as administrator’ option. Alternatively, you can also open an elevated command prompt from the WinX menu.

Next, 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.

Our freeware FixWin for Windows 10, let you flush the DNS cache, etc., in a click.

Read: How to clear or flush Google Chrome DNS Cache

Display DNS Cache

If you wish to confirm if the DNS cache has been cleared, you can type the following command and hit Enter:

ipconfig /displaydns

This will display the DNS cache entries if any.

Turn Off or Turn On DNS Cache

To turn off DNS caching for a particular session, type net stop dnscache and hit Enter.

To turn on DNS caching, type net start dnscache and hit Enter.

Of course, when you restart the computer, the DNC caching will, in any case, be turned on.

NOTE: Here’s a Batch File to Release TCP/IP, Flush DNS, Reset Winsock, Reset Proxy all at once.

Disable DNS Cache

If for some reason you wish to disable DNS caching, type services in start search and hit Enter to open the Services Manager. Here locate the DNS Client service.

The DNS Client service (dnscache) caches Domain Name System (DNS) names and registers the full computer name for this computer. If the service is stopped, DNS names will continue to be resolved. However, the results of DNS name queries will not be cached and the computer’s name will not be registered. If the service is disabled, any services that explicitly depend on it will fail to start.

Double-click on it to open its Properties box. Here change its startup type from Manual to Disabled. If you disable the DNS Client service, DNS Lookups may take longer.

These resources may also interest you:

1. How to reset Winsock & reset TCP/IP
2. How to reset WinHTTP Proxy Server Settings.
3. How to change DNS settings in Windows
4. Manage web browsing speed by changing DNS settings
5. Check if your DNS settings have been compromised.

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