Windows 11 users are currently dealing with a frustrating situation which is caused by a recent update. This update known as KB5026372 released on May 9 and it was meant to improve the performance of Windows 11 version 22H2 but have reported a significant decrease in VPN speeds especially when using L2TP/IPsec connections.
L2TP/IPsec VPN issues caused by the KB5026372 update
A user recently commented in the Microsoft tech community about the latest Windows 11 update KB5026372 which was released on May 9, 2023. The user mentioned that this update is causing significant slowdowns in their internal VPN connection which is making it nearly impossible to work. They explained that although they can establish a connection the internet speed drops to less than 1Mbps not only it issues with VPN but the Windows update has caused other problems as well. According to Windows Latest, one user also reported that KB5026372 triggered BitLocker activation leading to an automatic repair loop that requires a complete system wipe and Windows reinstallation. Windows Latest also mentioned that some users experienced issues where Windows shut down instead of rebooting after installing the update.
Microsoft has acknowledged these problems and is actively investigating them as reported by Bleeping Computer. A spokesperson from the company confirmed that they are aware of the issue and committed to finding a solution but no specific timeline given for a fix has been provided at this time.
Users have discovered a temporary workaround by uninstalling the problematic update. This approach works but it has a downside because it removes any security fixes that were included in the May update. It’s important to note that the update introduced security improvements that would be lost if it is uninstalled. The latest operating system from Microsoft includes enhancements from the previous update released on April 25, 2023 (KB5025305). It also introduces improved security measures like a race condition in Windows Local Administrator Password Solution (LAPS) and affecting the Kernel mode Hardware enforced Stack Protection security feature.
How to fix VPN Issue due to the Update KB5026372?
For now, there is no other option to fix this issue just one method is to uninstall this update. It looks difficult to do it but it doesn’t you just have to follow the instructions.
Step1. Select Start and go to the settings.
Step 2. Click on Windows Update then you will see Update History and select Uninstall updates.
Step3. Find for KB5026372 update and click on Uninstall button.
After you perform this action then you will completely remove the update from your computer and the speed of your L2TP/IPsec connection will go back to normal.
⚠️ IMPORTANT: The KB5026372 update has fixed some security issues that Microsoft identified in the previous version so if you uninstall it then those issues will return so it’s up to you or wait for the new updates.