Update KB5043145 Windows 11 is optional, which means that it should not be downloaded and installed separately, but it has undoubtedly become one of the worst and most dangerous that Microsoft has released so far, so much so that we can define it as a real disaster.

The list of issues and bugs brought by this update is such that even Microsoft had to step in to pull it, which means that in theory already should not show as available. If it appears, don’t even think about installing it, because if you do, it’s very likely that you’ll find that your computer won’t boot normally anymore.

If you installed it and were lucky enough to not suffer any problems, the truth is that I would recommend that you proceed to remove it for simple prevention, because there is nothing to prevent it from causing you some problem in the coming days. It’s very easy, just go to Windows Update, go to the update history and delete the one marked as KB5043145.

What problems does this Windows 11 update cause?

They are the most serious blue screen of death (green if we are in the Insider channel). Startup issues have also been confirmed that cause the computer to fail to boot and remain stuck in a constant loop that cannot be exited. The only way to fix this is through the advanced recovery screen and rolling back the update.

Microsoft has already confirmed that it was aware of this before downloading the update, but there’s more. Other users who have installed this update are logging in keyboard and mouse problemsand because of that they don’t react directly. In this case, what happens is that the USB ports to which both accessories are connected stop working.

Other known issues are that the Windows Subsystem for Linux (WSL) it stops workingThe Wi-Fi connection becomes unavailable and the right-click button switches to a Windows 10-style context-sensitive information display As I said earlier, Microsoft is aware of all these issues and the only solution is to uninstall the update.

How to uninstall a problematic update

You can do this with the classic procedure I explained earlier, by going to “Windows Update > Update history > Uninstall updates”. You can also use the Windows command console by entering the command “wusa /uninstall /kb:5043145” without quotes.

You will have tostart your computer complete the uninstall process and everything will be back to normal.