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zimablue97's avatar
zimablue97
Occasional Reader
Jul 03, 2026

0xc1900101 windows insider preview feature update

Dunno what to do anymore ... I've secured boot my laptop and my drivers are up to date ... I also unchecked the unnecessary services to get a fresh startup ... But still the problem remains ... Some said u should uninstall any program that conflicts with update ... But I dunno which one to delete ... Isn't there a log file which I can pinpoint my issue with ease and know what to do about it? ... Btw I'm running on beta channel.

1 Reply

  • Hi zimablue97, 0xC1900101 usually means Windows rolled back because a driver failed during the upgrade. I would run SetupDiag and check C:\$WINDOWS.~BT\Sources\Panther\setuperr.log and setupact.log. Before retrying, unplug external devices, remove VPN/security tools temporarily, and update storage, chipset, graphics, and network drivers.