Modern Setup Host is causing high CPU/Disk usage on Windows 11, and is a background process that extracts update archive and installs it on your computer.
If the Modern Setup Host takes longer than usual to release the Memory and Disk usage, it’s time to troubleshoot a few things to fix the high CPU Usage.
Restarting your Windows 11 computer at regular intervals can help eliminate bugs & glitches that may be preventing the operating system from functioning properly.
You can easily terminate the Modern Setup Host task on Windows by using the Task Manager app.
It makes sense to run the Windows Update Troubleshooter, as the Modern Setup Host is responsible for handling Windows updates.
Performing a clean boot is another best option to fix the Modern Setup Host high CPU usage problem on Windows 11.
SFC or System File Checker is an ultimate utility that finds & repairs corrupted system files.
Deleting the SoftwareDistribution folder to re-download the problematic update has helped many Windows 11 users fix high Disk/CPU usage problem.
Malware or Virus infection can also raise Modern Setup Host high CPU usage problem. So, perform a full virus scan with the Microsoft Defender app or use a third-party antivirus program.
If you have exhausted all methods, restoring your Windows 11 to a previous working state through the System Restore utility is the ultimate option.