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Update: The current theory we are working with after successfully replicating the issue is that the Windows Update is interacting with a proprietary software update from ManageEngine.

We were able to mitigate the issue by disabling ManageEngine on a reimaged machine. The issue did not recur.

We are working with ManageEngine to figure out how to work around the issue. It appears to be a ManageEngine update that, when applied alongside 19045.4353 causes a change in the BCD registry key that then causes the OS to fail to load.

Recommend others facing this issue try disabling ManageEngine and/or looking into possible third party software that may be interacting with the patch in bad ways.

Root Issue does not appear to be Microsoft’s fault.

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Susan Bradley, lmacri, windbg

Back at it today. Over the weekend the 2nd Team had no luck and began reimaging computers.

Root cause still unknown.

When attempting to Uninstall Updates, we receive an error saying “Unable to complete operation.”

System restore also not working.

Truly baffled by this issue. We have begun reimaging the fleet. Strangely, some computers that received the update had no issues. Of the 24 machines that received the update, 21 went into this unrecoverable state, but 3 have no issues. Some of the ones with no issues are the same model as the ones with issues.

One of the affected machines is giving a STOP/bugfix/kernel panic/guru meditation of 0xc0000098 indicating a BCD problem.

The affected machines are Dell Latitude laptops mostly, some Lenovo Thinkpads too.

Am checking now to see if the BlackLotus fix was implemented.

We are hooking in Microsoft contacts to inquire about the issue.

Thank you for your responses thus far!

Update Admin decided to push it due to a fix that it included. I don’t know the full story but some heads are going to roll.

We attempted to use cmd prompt to rebuild the BCD and got the error: “One of the registries is missing or corrupt.”