Microsoft investigates some issues affecting L2TP/IPsec VPN connection speed reported by some users and administrators after installing the latest update Windows 11:KB5026372.

The Redmond giant has implemented the same fixes and improvements as in the previous update KB5025305 as part of the cumulative update KB5026372 that was released during the Patch Tuesday released this month. The L2TP/IPsec VPN connection failure apparently occurred as early as KB5025305 and subsequently reached KB5026372, so there are now a larger number of affected users.

A Windows administrator made the announcement via Reddit finds no problems connecting to VPN, but speeds are extremely slow and RDP (Remote Desktop Protocol) shuts down due to poor connection quality. An investigation by the administrator himself led him to conclude that the origin is in the KB5025305 update.

Other reports indicate L2TP/IPsec VPN issues They can only be played if a Wi-Fi connection is used and those using a cable have not been apparently affected due to loss of connection speed. Microsoft has already stepped in to say that it is aware of the issues and is currently investigating to find a solution.

As a temporary measure, you can choose to remove the update package that implements the bug, but this will also remove the rest of the security and bug fixes that are part of the same package, so it’s not a bug. ideal solution.

Microsoft reminds that it “combines the latest service stack update (SSU) for your operating system with the latest cumulative update (LCU). To remove LCU after installing a combined SSU and LCU package, use the DISM /Remove-Package command-line option with the LCU package name as an argument. You can find the package name using this command: DISM /online /get-packages“.

VPN connection speed is apparently not the only problem caused by KB5026372 because other users have reported issues with SSD write speed and in other cases with performance and stutter in games. It’s perfectly normal for an operating system to cause incidents during its life cycle, but it’s also true that Microsoft has gotten us used to apparently higher numbers with its last two operating systems.