Windows 11 KB5094126 BSODing, freezing, forcing BitLocker lockout, breaks OneDrive, and more

A wide range of bugs and problems are being reported online by users including blue screening, freezing, BitLocker lockout, OneDrive access fails.

Microsoft released Windows 11 KB5094126 and KB5093998 last week as the latest Patch Tuesday updates. Following that the company also published the accompanying dynamic updates under KB5094149, KB5095971, and KB5094156.

While Microsoft has so far not acknowledged any major problems with the release, some users online are running into problems. These range from OneDrive and Dropbox access issues, BitLocker recovery lockouts, to blue screens and BSODs.

The most common one seems to be happening with HP systems wherein affected users say they hit 0xc0430001 BSOD (blue screen of death) error code after the KB5094126 update. We wonder if this could be related to the recent bug we covered on HP devices wherein the ongoing Secure Boot certificate updates are leading to similar issues.

While we are not certain, users affected by this issue likely need to ensure that the boot.stl file is included on the installation media (such as a USB installer or ISO), if the above-mentioned dynamic updates are deployed. If this file is missing, computers may fail to boot from the installation media and could display the error 0xc0430001. This STL file is used by Secure Boot to verify that the boot files are trusted, so it must match the same Windows version and system architecture.

To ensure the file is included, Microsoft recommends using the Update WinPE script, which automatically updates the image and handles the required files. Alternatively, you can manually copy the boot.stl file from the Windows\Boot\EFI folder on a Windows device and place it in the matching folder on your installation media before deploying the updated image.

Aside from blue screening some users also note their systems have been freezing following the update. This could be happening to Lenovo PCs specifically.

In the case of the OneDrive and Dropbox access issues, a user figured out that there could be a conflict with UAC. He explained: "Okay, so I did some digging, and in our environment KB5094126 breaks OneDrive and Dropbox in Explorer. I went through all our GPOs and found out that the combination of disabling UAC and having my user being a local admin breaks OneDrive in Explorer. ... If I enable UAC again, then it works, even with KB5094126 still installed."

Hopefully, Microsoft will look into these issues.

Source: Microsoft forum (link1, link2, link3, link4), Reddit (link1, link2, link3, link4)

Source

Hope you enjoyed this news post. Feedback welcome.

Posted Monday 15 June 2026 at 5:07 pm AEST (my time).

News posts: 2023 5,800+ | 2024 5,700+ | 2025 5,700+ | 2026 (to end of May) 2,092

RIP Matrix