Windows 11 Task Manager running at 60% continuously since Version 20.4.0 (55980) update

M

MarkB76

Bit poster
Operating system: Mac OS
Hardware: MacBook M3 64GB ram
VM: Windows 11 Version 10.0.22631 Build 22631
Since the last update to Parallels Version 20.4.0 (55980) windows virtual machine shows Task Manager running continuaously at 60%.
 

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It doesn't seem to be because of Parallels update. For me it happened after installed Windows 11 security update . After I uninstalled that update. The cpu consumption on my MacBook returned to normal.
 
Uninstalling latest updates seems to fix it, took me while to find:
Settings > System > Recovery > Advanced startup > Restart Now

Troubleshoot > Advanced Options > Uninstall Updates > Uninstall latest quality update
 
Unfortunately it didn't seem to help. Uninstalled latest update, rebooted, and it was still pegging the performance cores. Reinstalled latest update, and it's still status quo. This is curious.
 
Windows just updated itself today, same issue.

Uninstalling the latest quality update fixed it again, I've paused updates.

This is the history for a working system:

upload_2025-7-13_15-42-0.png
 
Hmm, it will only let me uninstall KB5056580, which I do, and it seems to uninstall correctly. But it doesn't give me the option to uninstall KB5062552. Whether I uninstall or reinstall KB5056580, the problem remains. Are you able to uninstall KB5062552?
 
I don't know how to uninstall individual windows updates - there's only the "latest quality update" option, and that fails if I try to run it twice.
 
I tested uninstalling KB5062552 (it was listed as desciribed above). Overnight the update installed itself again - me missing to halt further updates :rolleyes:
I uninstalled once again and then I found this advice in another (very old, but woken up) thread. Went wild and updated w/o backing up - feasible if you don't have a lot of apps installed and configs made. #99
We would recommend you to update your current Windows 11 virtual machine to 24H2 and test if the issue still persists.

First, ensure that you back up your Windows virtual machine before proceeding with the steps outlined as per this KB article :
Click to expand...
https://kb.parallels.com/en/4859or https://kb.parallels.com/8827
1. Download the .ISO image file from Microsoft website : https://www.microsoft.com/en-us/software-download/windows11arm64
2. After successfully downloading the Windows .ISO image file, start your Windows 11 virtual machine and mount the Windows installation .ISO file inside it, following the instructions in this KB article : https://kb.parallels.com/8638
3. Once you have successfully mounted the Windows installation image file inside your Windows 11 virtual machine, you will need to run the setup file located within the image in the "In this PC" Window.
4. Press Command + E on your keyboard to open the "Quick Access" File Explorer window, then select "DVD Drive" from the left pane.
5. Double-click the "Setup" file to begin the upgrade to 24H2.
Click to expand...
https://forum.parallels.com/threads/still-over-100-cpu-usage-help.349334/page-5#post-940968
 
Joy! Updating to 24H2 does indeed fix it.

A couple of notes:
- I couldn't get Windows Update to find 24H2 itself
- couldn't download iso from the Mac, had to download from the Win machine
- if you don't see the "Keep personal files and apps" option, it is possibly the language version of the iso. I first tried "English International", but apparently "English Australia" is "English US"
 
OlaS1 said:
I tested uninstalling KB5062552 (it was listed as desciribed above). Overnight the update installed itself again - me missing to halt further updates :rolleyes:
I uninstalled once again and then I found this advice in another (very old, but woken up) thread. Went wild and updated w/o backing up - feasible if you don't have a lot of apps installed and configs made. #99
Click to expand...

It worked for me. The problem really is the KB5062552. After uninstall it, the system come back to normal. But, like you said, Windows Update will install it again.
I uninstalled the KB5062552 and installed 24H2. The system is working fine now. Thank you!
 
Uninstalling both KB5062552 and KB5062663 is the temporary fix for me.
Has the parallels team addressed the problem in 20.4.1 (55996), or can anyone confirm that Microsoft has fixed it in a later cumulative update? Thanks.
 
If there's any possibility you can move to 24H2 - this is resolved, along with many other reasons one would want to move to the current Windows version anyway.
 
Codeworks said:
Uninstalling both KB5062552 and KB5062663 is the temporary fix for me.
Has the parallels team addressed the problem in 20.4.1 (55996), or can anyone confirm that Microsoft has fixed it in a later cumulative update? Thanks.
Click to expand...

Hello,

Kindly attempt to update your Windows 11 virtual machine to version 24H2 as suggested:

To update your system to Windows 11 version 24H2 using the ISO file, please follow these steps carefully:
  1. In your virtual machine, download the official Windows 11 24H2 ISO from Microsoft's website ( https://www.microsoft.com/en-au/software-download/windows11 )
  2. Open the downloaded ISO file in File Explorer by double-clicking it.
  3. Run Setup.exe from the mounted ISO.
  4. Choose the Upgrade option and opt to keep your personal files and apps during this process.
  5. Follow the on-screen prompts to complete the upgrade.
  6. Once the upgrade is installed, restart your virtual machine.
Kindly let us know if this resolves the issue.
 
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