New
#11
the only way I seemed to have gotten rid of that Win11 warning on my dad's Toshiba laptop was to do an in-place upgrade repair install of Win10 21H1 using revised 21H1 install media (and disabling/turning off wifi connections or turning on "airplane mode" while running Win10 setup then re-enable the wifi internet connections after setup was fully complete) created by the 21H1 MCT noted here. then hide/block the KB5005463 update using wushowhide.diagcab and adding this reg key noted in this bleepingcomputer article.
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PCHC]
"PreviousUninstall"=dword:00000001
I no longer get offered the PC health check app from KB5005463 with that reg key set