RECOMMENDED: Click here to fix Windows errors and optimize system performance.

If you’re having network connection problems on your Windows desktop or laptop, and you’ve ruled out user error or a bad Wi-Fi connection, there’s a small chance that Microsoft is responsible. There is a bug affecting users who connect to proxy servers or VPNs that is serious enough that Microsoft is releasing an unscheduled update to fix the problem.

Devices that use a manually or automatically configured proxy server, especially those with a virtual private network (VPN), may display limited or no Internet connection status in the Network Connection Status Indicator (NCSI) area. This can happen when the VPN is connected or disconnected, or when the state changes between the two. Devices with this problem may also have problems accessing the Internet with applications that use WinHTTP or WinInet. Examples of applications that may be affected on devices in this state include Microsoft Teams, Microsoft Office, Office 365, Outlook, Internet Explorer 11, and some versions of Microsoft Edge.

Since Windows released Patch 1709, users have been having trouble getting their L2TP / IPSEC RAS VPN to work. After the update, users experienced the following errors:

The main reason why this update caused the L2TP / IPSEC VPN to stop working is that NAT traversal was disabled. Just follow our instructions to get your VPN working again.

Amendment of the register.

We can try adding the key to the PolicyAgent registry. If this method does not work, you can always revert the changes in reverse order. Note that the Registry Editor is a powerful tool and creating/modifying keys that you don’t know about can disrupt the computer and make it unusable.

January 2021 Updated:

We now recommend that you use this tool to fix the error. The tool also corrects common computer errors, protects against file loss, malware and hardware failures, and optimizes your PC for optimal performance. With this software you can quickly solve problems on your PC and prevent others from having problems:

  • Step 1 : Download the PC repair and optimization utility (Windows 10, 8, 7, XP, Vista – Microsoft Gold Certified).
  • Step 2 : Click on the Start scan button to detect problems in the Windows registry that may cause PC problems.
  • Step 3 : Click the Fix All button to fix all issues.

  • Press Windows + R to start the Startup application. In the dialog box, type regedit and press Enter.
  • In the registry editor, navigate to the following path :
  • Computer HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services PolicyAgent
  • In the desired path, right-click on the empty field on the right side of the window and select New>WORDS.
  • Name the new word AssumeUDPEncapsulationContextOnSendRule. After creating it, double-click it to open the properties and set the value to 2. Click OK to save the changes and exit.

Reinstallation of VPN package (CMAK)

After the upgrade (from 1703 to 1709), many users reported that their VPN client stopped working properly or stopped working altogether. After many complaints, Microsoft has officially confirmed the issue and released a statement saying that you may need to completely reinstall the VPN package. More specifically, it was about CMAK VPN networks (Connection Manager Administration Kit).

  • Press Windows + S to open the search bar. Enter the functions in the dialog box and open the first result.
  • In the Features window, scroll through all items until you find the RAS Connection Manager Administration Kit (CMAK). If you have already used the package, it has probably been checked. Clear the check box and select OK.
  • Windows will now remove the utility. Restart the computer and return to the function screen.
  • Check the box (RAS Connection Manager (CMAK)) and click OK to continue the installation. Once the installation is complete, restart your computer and check if the problem is resolved.

RECOMMENDED: Click here to diagnose Windows errors and optimize system performance.

CCNA, Web Developer, PC Convenience Store

I am a computer enthusiast and a practicing computer professional. I have years of experience in computer programming, troubleshooting and hardware repair. I specialize in web development and database design. I also have CCNA certification in network design and troubleshooting.

frequently asked questions

You cannot connect to the VPN after updating Windows 10 ?

First, check your VPN for updates and update Windows 10 again. The next step is to install your VPN solution from scratch. … Check the authentication process (VPN profile), disable third-party antivirus and firewall, modify the registry, and resolve connection issues.

How do I fix a VPN on Windows 10?

Is VPN blocked on Windows 10? Don’t panic, that’s the point.

How do I update my VPN?

How to restore Windows VPN connection only after rebooting – Applications …

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