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I am running Windows 11 Pro 64 bit version 21H2, build 22000.527.
After the latest update explorer.exe started to grab occasionally about 20% to 50% CPU power. Upon this high CPU time taskbar does not work, applications already on the desktop work though.
I have checked the desktop folder for any files missing the icon and I have also disabled OneDrive, did not help.
This problem is on almost all the time. It easies down occasionally but starts again. If I have the computer locked and log in again the problem starts immediately.
I do have some applications in desktop right button menu but they were there before the update without any problem(7-zip, WinZIP, NitroPDF etc).
This is quite annoying and prevents me working with the PC. The computer is Lenovo Thinkbook with 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz 2.80 GHz and 16 GB RAM.
Should I try to uninstall the latest update and is there a change that it messes up the operating system?
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
This happens to me every time I reboot the PC. (It's powered down overnight).
On another thread, someone recommended using Task Manager to Restart the Windows Explorer process.
Providing you let the process run for a few minutes first, then restart it, this works for me.
On Restarting, it again maxes out one of the CPUs for a couple of minutes then drops away 0.1 % then 0%.
JuusoKorhonen,
Did you remove the "automatically hide taskbar" from the registry or just uncheck it?
I got the same problem, after uninstalled KB5020414 the problem is gone.
So running also my PC with KB5020414 uninstalled. It did start to install the KB5011493 but I froze the update for a month waiting for a solution.
I recreated my profile yesterday and so far the problem isn't happening in this new profile. I do happen to use Autohide Taskbar, but in the broken profile when I turned that off it didn't stop the issue from happening. I'll hope that it stays fixed in the new profile. Thanks for the info and tip.
Well as it turns out, this issue is happening in the new profile too.
Hoping for a Windows Update to fix this ASAP.
I recreated my profile yesterday and so far the problem isn't happening in this new profile. I do happen to use Autohide Taskbar, but in the broken profile when I turned that off it didn't stop the issue from happening. I'll hope that it stays fixed in the new profile. Thanks for the info and tip.
