Microsoft recently rolled out KB5034441 (Windows Recovery Environment update) for Windows 10, version 21H2 and 22H2. It’s a security update that fixes the vulnerability related to Bitlocker encryption. The vulnerability could potentially allow attackers to bypass BitLocker encryption by utilizing the Windows Recovery Environment (WinRE).
We have created a quick video walkthrough explaining the same issue embedded at the bottom of the post.
Some users may encounter an error message during the update process indicating a lack of disk space:
Windows Recovery Environment servicing failed.
This error is triggered when the recovery partition on certain computers is not large enough to accommodate the WinRE update. It’s essential to address this issue promptly to complete the update successfully.
Apart from this, there is a known issue related to error code handling, where users might encounter a different error message than the one related to disk space insufficiency. Specifically, users might see:
0x80070643 - ERROR_INSTALL_FAILURE
Despite this discrepancy in error messages, users should interpret this as an indication of insufficient disk space rather than a separate installation failure. The provided manual resolution instructions should still be followed to address this issue.
Windows 10 KB5034441 Fails to Install with Error 0x80070643
To overcome the insufficient disk space challenge and proceed with the WinRE update and fix the Windows Recovery Environment servicing failed. (CBS_E_INSUFFICIENT_DISK_SPACE) or 0x80070643 – ERROR_INSTALL_FAILURE, users can follow the provided manual instructions to resize the partition. These instructions guide users through the process of resizing their partitions to meet the update’s requirements. Following these steps diligently will ensure a successful installation.
I recommend users, if they aren’t using BitLocker on their PCs, then avoid installing the update for now and wait for MS to roll something out rather than mess about increasing the partition size.
On the other hand, if you’re using Bitlocker and understand what is written in the manual suggested by Microsoft, then only put your steps forward.