Thank you Thomas.

>>My windows 11 is sick. I tested the code on Windows server 2016 and on an old windows 10 computer. Everything wen through practically smoothly. Perfect on WIndows Server 1016 but Slooooower on windows 10.
>>
>>So...
>>
>>8-< Now I'm wondering if there is a way to install a fix for that error without having to reinstall windows 11.
>>
>If your SSD is beefy enough I'd just add another OS.
>Since Win7 it is not as much of a hassle as before -
>as Win allows install into a vhd (vhdx in Win10/11),
>so no need to futz with multiple partitions or multiple disks.
>
>For safety reasons I still have 2 partitions (in case 1 gets nuked)
>I have Hyper-V server 2019 and W11 23H2 on one,
>W11 22H2 plus W10/64 and W10/32 on the other.
>
>Create the VHDX as type=expandable maximum=120000;
>those files stay here at 40 - 60GB each, easy to save/backup to external
>with a batchfile doing some gymnastics moving dirs into special save dir,
>calling robocopy with specific targets for each partition and my other directories.
>
>One caveat: I have most of my programs as portable apps in extra directory,
>so ~20 GB of programs are not in each vhdx, but external and common for all.
>It is mostly MS programs (except vfp and Office 97) still in OS.vhdx\Programs or
>OS.vhdx\Programs (X86).
>
>Last step minimizes work when adding / testing new installs a lot
>Create an USB boot stick with ventoy and many .ISO and the task gets easy -
>and you are set to help others without a total OS wipe.
>
>HTH
>
>thomas