​Microsoft has confirmed that some Home windows 10 and Home windows 10 Enterprise LTSC 2021 techniques will boot into BitLocker restoration after putting in the Might 2025 safety updates.
The BitLocker Home windows safety function encrypts storage drives to forestall information theft, and Home windows computer systems usually enter BitLocker restoration mode after occasions like TPM (Trusted Platform Module) updates or {hardware} adjustments to regain entry to protected drives.
​At this time, Microsoft confirmed the difficulty and mentioned it is investigating studies that “a small quantity” of Home windows 10 PCs show BitLocker restoration screens after putting in the KB5058379 replace.
“On affected units, upon putting in the replace, Home windows would possibly fail to begin sufficient instances to set off an Automated Restore. On units with BitLocker enabled, BitLocker requires the enter of your BitLocker restoration key to provoke an Automated Restore,” the corporate mentioned in a Home windows launch well being replace.
Impacted customers who examine the Home windows Occasion Viewer may also see LSASS errors and set up failure occasions with 0x800F0845 errors within the System occasion log. Moreover, whereas some units will enter a BitLocker restoration loop after Startup Restore fails to provoke an computerized restore, others will efficiently roll again to the beforehand put in replace after a number of makes an attempt to put in KB5058379.
You possibly can retrieve the BitLocker restoration key by logging into the BitLocker restoration display screen portal together with your Microsoft account. This help web page supplies additional particulars on discover the restoration key in Home windows.
Microsoft says it is investigating the difficulty and can present an replace as soon as extra data concerning the basis trigger turns into obtainable.
Microsoft’s acknowledgment of this problem comes after many Home windows customers and admins have reported seeing units unexpectedly enter the Home windows Restoration Surroundings (WinRE) and displaying a BitLocker restoration display screen after putting in the KB5058379 cumulative replace launched as a part of the Might 2025 Patch Tuesday.
At the moment, these studies level to all kinds of system configurations and units from Lenovo, Dell, and HP being affected, so it is unclear if that is attributable to a particular {hardware} or software program problem.
“The most recent KB5058379 launched Might 13 high quality replace failed in Home windows 10 units. Some units it brought on triggering bitlocker key window after restart,” one consumer mentioned on Microsoft’s boards.
“We’ve got a couple of half dozen laptops that skilled numerous intermittent points after receiving the identical KB – some require bitlocker keys to begin up, others refusing to begin in any respect,” a Home windows admin added on Reddit.
To get again into Home windows on techniques caught at a BitLocker restoration immediate, you may strive disabling the Intel Trusted Execution Know-how (TXT) from the BIOS. If that fails, as Microsoft help advises, you can even attempt to disable Safe Boot, Virtualization Applied sciences (if the difficulty persists), or Firmware Safety.
In August 2024, Microsoft fastened one other problem that triggered BitLocker restoration prompts on Home windows 10, Home windows 11, and Home windows Server techniques after putting in the July 2024 Home windows safety updates.
Two years earlier, in August 2022, Home windows units have been impacted by comparable points after the KB5012170 safety replace brought on some units to boot into the BitLocker restoration display screen.
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