Can't run Windows Update

Hello,

You can try manual to latest version Windows 11 25H2 using ISO file. 

Follow these steps: 

Download Windows 11 25H2 ISO from the official Microsoft website.

Double click on it to mount it to a DVD drive.

Then go to DVD drive, double click on setup.exe to proceed.

Follow on-screen instructions to complete upgrade.

For detailed instructions, refer this step-by-step guide:

https://www.kapilarya.com/how-to-upgrade-to-windows-11-version-25h2#method-3-upgrade-to-windows-11-25h2-using-iso-file

Let us know if this helps!

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.