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Windows Server Insider 22509 setup can not upgrade to 22518 but 22509 to 22509 is fine with setup
Matching Profile found: FindAbruptDownlevelFailure - 55882B1A-DA3E-408A-9076-23B22A0472BD SetupDiag version: 1.6.2107.27002 System Information: Machine Name = YL Manufacturer = ASUS Model = Syst...
We haven't been able to reproduce this issue internally. Would you be able to provide setup steps?
I just mount the 22518 iso in this computer as E drive and click the build 22518 setup (E Drive Virtual CDROM) on build 22509 system, it will be displayed not enough space and somethings. So I use Microsoft setup diag to see the log.
Because I tested 22509 iso is fine with setup in-place upgrade on build 20348 at the same time, it is fine without any error.
I also tested 22509 iso is fine with setup in-place update on build 22509 too, upgrade to same build 22518, it is fine without any problem too
So I think that it should be 22518 issue with in-place upgrade from 22509
