Monday, February 19, 2024

Win11 cumulative update February 2024 (KB5034765) - cant be installed

In February 2024 MS released a very important cumulative update (which is also fixing 2 major Zero-Day-exploits in the OS with the cumulative update KB5034765 as reported by various sources in the internet)

  • CVE-2024-21412 Internet Shortcut Files Security Feature Bypass Vulnerability
  • CVE-2024-21351 Windows SmartScreen Security Feature Bypass Vulnerability
Officially MS is only reporting on their page publicly this update "solves security issues"

While installing theses updates:

  • 2024-02 Cumulative Update for Windows 11 Version 23H2 for x64-based Systems (KB5034765)
  • 2024-02 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2 for x64 (KB5034467)

I failed as many others already trying to install this update.

During the offline mode installing the update I got this message:

Something didn't go as planned. No need to worry-undoing changes.

After the rollback you will see that the update is still waiting for you to be installed.

Resolution is really simple in this case:
  • Check for the hidden folder: C:\$WinREAgent
  • As admin rename it into something else like "C:\DONOTUSE THIS DOLLARWinREAgentFOLDER" or any other name.

And then let the update run again.

When you re-run the update after renaming the folder its very likely that it works.
So far for me and obviously many others they reported the same issue.

After this action my system reported now no new updates and the Windows version was "Build 22631.3155" as expected (winver.exe).

Image Credits: Image created with Dalle2 prompt: man with black suit and black sunglasses is leaning against a large Windows logo. He is leaning from the right side to the left. On the left side a Windows logo is rushing in to the picture and stopped by the man.