Security News > 2020 > November > Microsoft is investigating lost Windows 10 certificates issue
Microsoft is investigating a known issue leading to missing system and user certificates after updating certain managed Windows 10 systems using outdated installation media through update management tools, physical media, or ISO images.
"System and user certificates might be lost when updating a device from Windows 10, version 1809 or later to a later version of Windows 10," Microsoft explains.
BleepingComputer has reached out to Microsoft for details on what are the exact certificates getting lost due to this issue but did not hear back at the time of publication.
While a fix for this issue is not immediately available as Microsoft has just started investigating it and working on a solution over the weekend, you can work around it by going to a previous Windows 10 version using instructions available here.
"You will then need to update to the later version of Windows 10 after the issue is resolved in your environment."
News URL
Related news
- Microsoft silently fixes Start menu bug affecting Windows 10 PCs (source)
- Microsoft will update Office apps on Windows 10 until 2028 (source)
- Microsoft confirms May Windows 10 updates trigger BitLocker recovery (source)
- Windows 10 KB5055518 update fixes random text when printing (source)
- Microsoft: Windows CLFS zero-day exploited by ransomware gang (source)
- Microsoft fixes actively exploited Windows CLFS zero-day (CVE-2025-29824) (source)
- Microsoft fixes auth issues on Windows Server, Windows 11 24H2 (source)
- Bad luck, Windows 10 users. No fix yet for ransomware-exploited bug (source)
- Microsoft Patches 125 Flaws Including Actively Exploited Windows CLFS Vulnerability (source)
- Microsoft: April 2025 updates break Windows Hello on some PCs (source)