this post was submitted on 14 Mar 2026
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Microsoft Confirms Windows 11 Bug That Locks Users Out of the C: Drive (windowsreport.com)
submitted 3 days ago by throws_lemy@reddthat.com to c/technology@lemmy.world
189 comments fedilink hide all child comments
 

KB5077181 was released about a month ago as part of the February Patch Tuesday rollout. When the update first arrived, users reported a wide range of problems, including boot loops, login errors, and installation issues.

Microsoft has now acknowledged another problem linked to the same update. Some affected users see the message “C:\ is not accessible – Access denied” when trying to open the system drive.

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[–] Auth@lemmy.world 1 points 2 days ago (1 children)

I doubt that story. I'm a linux user at home but at work I admin windows and linux systems. I can see his logic because hes thinking how I would. But windows doesnt behave like that. On linux you can fill a drive and get issues booting but windows leaves space so that even when the user drive is full the system can still create temp files needed for operation. Whatever he did trying to get around the default behavior he misconfigured something

[–] rodneylives@lemmy.world 1 points 1 day ago (1 children)

I dunno? It sounds very plausible, exactly the kind of thing that Windows would do. I posted about it to Metafilter some time back and no one there seemed to think it couldn't happen.

[–] Auth@lemmy.world 1 points 6 hours ago (1 children)

It sounds like user error to me. There is like 2 settings on onedrive and they couldnt even be bothered to configure it yet hes going through all this complicated troubleshooting.

[–] rodneylives@lemmy.world 1 points 3 hours ago

If you can't log into Windows you can't change its OneDrive settings! What's more, the user had no idea what was causing the problem, be it OneDrive or something else, until he did that troubleshooting! And, just setting up a new phone shouldn't make your computer unbootable for any reason! Geez, way to victim-blame there.