^(Are)当您尝试在 Windows 10 PC 上使用VPN时，您^(VPN)是否看到VPN 错误 806 ？^{(VPN Error 806)}VPN 错误 806^{(VPN Error 806)}到底是什么，我们如何修复错误并连接到VPN？在本指南中，我们向您展示了在 Windows 11/10 上修复VPN 错误 806（GRE 被阻止）的方法。^{(VPN Error 806 (GRE Blocked))}

^{(VPN has become a necessity)}由于各种原因，如今 VPN 已成为必需品。其中^(First)最重要的是隐私。有许多VPN服务提供商提供最有效的功能，为您提供隐私和安全。您可以免费使用VPN^{(VPN for free)}，还可以通过付费订阅获得其他功能。我们使用的每个应用程序都会在某个时间点向我们显示一些错误。VPN 错误也很常见，但可以通过一些调整轻松修复。

什么是 VPN 错误 806（GRE 被阻止）

VPN 错误

为了使VPN能够按预期工作并尽其所能确保您的 PC 安全和私密，该程序必须连接到您的互联网连接。当您的 Internet 连接和VPN之间的连接被任何防火墙或任何其他程序阻止或干扰时，您会看到VPN 错误 806^{(Error 806)} ( GRE Blocked )。GRE代表通用路由封装^{(General Routing Encapsulation)}。您必须避免或修复干扰您的互联网和VPN^(VPN)程序之间连接的程序。

通常，每当您看到 VPN 806 ( GRE Blocked ) Error时，您都会看到以下消息：

There is a connection between your computer and the VPN server, but the VPN connection cannot be established. The error code is 806. The most common reason for this error is that at least one Internet device (such as a firewall or router) between your computer and the VPN server is not configured to allow GRE (Generic Routing Encapsulation) protocol packets. If the problem persists, contact your network administrator or ISP.

如何修复VPN 错误 806^{(VPN Error 806)}（GRE 被阻止^{(GRE Blocked)}）

VPN 错误 806^{(VPN Error 806)} ( GRE Blocked ) 可以通过以下任何一种方法修复。

打开 TCP 端口 1723
关闭 Windows Defender 防火墙
关闭防病毒软件
更新路由器的固件

让我们详细查看修复并知道如何做

1]打开TCP端口1723

VPN 默认使用TCP端口 1723。它也是默认打开的。有时，它无法打开。您必须手动修复错误VPN 806 ( GRE Blocked )。

要打开 TCP 端口 1723，

转到Windows Defender 防火墙高级安全性^{(Windows Defender Firewall Advanced Security)}
选择入站规则
单击操作并选择新规则
选择 Port^{(Select Port)}，输入 1723 代码，并允许连接

如果我们详细介绍，请在开始菜单搜索中搜索^{(Start Menu)}防火墙^(Firewall)，然后打开具有高级安全性的 Windows Defender 防火墙^{(Windows Defender Firewall with Advanced Security)}。

在Windows Defender 防火墙高级设置^{(Windows Defender Firewall Advanced Settings)}中，单击 入站规则^{(Inbound Rules)}以继续打开端口。

Windows Defender 防火墙高级安全

然后，单击菜单中的Action 并选择 New Rule。

防火墙操作新规则

它将打开一个 新入站规则向导^{(New Inbound Rule Wizard)}。选中端口 ^(Port )旁边的单选按钮，然后单击窗口底部的下一步。^{(Next )}

新入站规则

现在，默认选中TCP 旁边的按钮。在特定本地端口 ^{(Specific local ports )}旁边的文本框中输入 1723 ，然后单击 Next>。

TCP 端口 1723

您必须 允许连接 ^{(Allow the connection )}打开TCP端口 1723。检查它旁边的按钮，然后单击 Next>。

允许 TCP 1723

然后，输入您希望为规则命名的名称，完成打开TCP ^(Name )端口^(TCP)1723。

2] 暂时^{(Temporarily)}关闭Windows防火墙^{(Windows Firewall)}

Windows Defender 防火墙^{(Defender Firewall)}可能导致VPN错误 806。您必须关闭 Windows 防火墙^{(turn off the Windows Firewall)} 才能解决此问题。关闭防火墙^(Firewall)后，您可以尝试连接VPN。

3]暂时关闭防病毒

我们使用防病毒软件来保护我们的 PC 免受我们看不到或未预料到的威胁。大多数防病毒程序会接管您 PC 的防火墙^(Firewall)设置并对其进行管理以保护您的 PC。防病毒软件可能会影响您的VPN连接，以保护您的 PC。将其关闭并尝试连接到VPN。

4]更新路由器的固件

VPN连接使用最新的协议为您提供私人连接。当您的VPN和路由器的协议不匹配时，无法建立连接。您必须更新路由器的固件^{(update the router’s firmware)}才能获得最新的协议。

这些是可以解决 Windows 10 上的VPN 错误 806^{(VPN Error 806)}（GRE 被阻止^{(GRE Blocked)}）的可能修复程序。如果您有任何疑问或建议，请通过评论告诉我们。

相关： ^{(Related: )}常见 VPN 错误代码故障排除和解决方案。^{(Common VPN error codes troubleshooting & solutions.)}

How to fix VPN Error 806 (GRE Blocked) on Windows 11/10

Are you sеeing VPN Error 806 when yоu are trying to use VPN on your Windows 10 PC? Whаt exactly is VPN Error 806 and hоw сan we fix the error and connect to VPN? In this guide, we show you ways to fix VPN Error 806 (GRE Blocked) on Windows 11/10.

VPN has become a necessity these days due to various reasons. First and foremost among them is privacy. There are many VPN service providers available with the most efficient features to provide you with privacy and security. You can use a VPN for free and also get additional features with a paid subscription. Every application we use shows us some errors at some point in time. VPN errors are also common, but they can be fixed easily with some tweaks.

What is VPN Error 806 (GRE Blocked)

VPN Error

For a VPN to work as expected and do whatever it has to do to make your PC secure and private, the program has to connect with your internet connection. When the connection between your internet connection and VPN is blocked or disturbed by any firewall or any other program, then you see VPN Error 806 (GRE Blocked). GRE stands for General Routing Encapsulation. You have to avoid or fix the program that is disturbing the connection between your internet and VPN program.

Generally, whenever you see VPN 806 (GRE Blocked) Error, you see the following message:

There is a connection between your computer and the VPN server, but the VPN connection cannot be established. The error code is 806. The most common reason for this error is that at least one Internet device (such as a firewall or router) between your computer and the VPN server is not configured to allow GRE (Generic Routing Encapsulation) protocol packets. If the problem persists, contact your network administrator or ISP.

How to fix VPN Error 806 (GRE Blocked)

VPN Error 806 (GRE Blocked) can be fixed by any of the following methods.

Open TCP Port 1723
Turn off Windows Defender Firewall
Turn off Antivirus
Update your router’s firmware

Let’s see the fixes in detail and know how to do them

1] Open TCP Port 1723

VPN by default uses TCP port 1723 by default. It is open by default too. Sometimes, it fails to open. You have to do it manually to fix the error VPN 806 (GRE Blocked).

To open TCP Port 1723,

Go to Windows Defender Firewall Advanced Security
Select Inbound Rules
Click on Action and select New Rule
Select Port, enter 1723 code, and allow connection

If we go into details, search for Firewall in the Start Menu search and open Windows Defender Firewall with Advanced Security.

In the Windows Defender Firewall Advanced Settings, click on Inbound Rules to continue opening the port.

Windows Defender Firewall Advanced Security

Then, click on Action in the menu and select New Rule.

Firewall Action New Rule

It will open a New Inbound Rule Wizard. Check the radio button beside Port and click Next at the bottom of the window.

New Inbound Rule

Now, the button beside TCP is checked by default. Enter 1723 in the text box beside Specific local ports and click on Next>.

TCP Port 1723

You have to Allow the connection to open TCP port 1723. Check the button beside it and click on Next>.

Allow TCP 1723

Then, enter the Name you wish to name the rule finish opening the TCP port 1723.

2] Temporarily turn off Windows Firewall

Windows Defender Firewall might be causing the VPN error 806. You have to turn off the Windows Firewall to fix the issue. After turning off the Firewall, you can try connecting to VPN.

3] Temporarily turn off Antivirus

We use antivirus to protect our PC from threats that we don’t see or expect. Most of the antivirus programs take over the Firewall settings of your PC and manage them to protect your PC. The antivirus might be working against your VPN connection doing its work in protecting your PC. Turn it off and try connecting to VPN.

4] Update your router’s firmware

VPN connections use the latest protocols to give you a private connection. When the protocols of your VPN and your router are not matched, the connection cannot be established. You have to update the router’s firmware to get the latest protocols.

These are the possible fixes that can resolve the VPN Error 806 (GRE Blocked) on your Windows 10. If you have any doubts or suggestions do let us know, through the comments.

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About the author

我是一名软件工程师，拥有 Xbox Explorer、Microsoft Excel 和 Windows 8.1 Explorer 方面的经验。业余时间，我喜欢玩电子游戏和看电视。我拥有犹他大学的学位，目前在一家国际公司担任软件工程师。

如何在 Windows 11/10 上修复 VPN 错误 806（GRE 被阻止）

什么是 VPN 错误 806（GRE 被阻止）