RS-Prerelease build 25309 out to Dev Channel

Just got this error trying one update from 25300 to 25309, it reverted back to 25300.

Tried updating from 25295.1000.

Got to 100% and GSOD with error in FLTMGR.sys.

Reverted to a previous backup of the same release and it failed again with the same error.

FYI. I got the install error at high 90's. Since the error is documented as probable driver problem and I had installed the latest NVIDIA driver earlier today I downloaded and installed the previous driver. Tried again. It got to 99% and failed again.

Update was painless but once again my opening Desktop had been changed from Spotlight to a Solid background colour!

Announcing Windows 11 Insider Preview Build 25309

[Windows Spotlight]

• Starting today, we are disabling the different treatments we’ve been trying out for Windows Spotlight that began with Build 25281 due to an issue impacting the experience Insiders will have on these treatments. We plan to re-introduce an updated Windows Spotlight experience for Insiders in a future flight based on the feedback from Insiders from using these different treatments. As part of disabling these treatments, Insiders may need to go to Settings > Personalization and re-enable Windows Spotlight.

I've seen that happening before, but in this case, it was expected. 😎

Looking in Update History shows code 0xc19000101.

What's the 2nd part of the error code? i.e. 0xC1900101 - 0x20004

Resolution procedures