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.


Huh, my computer doesn’t seem to be affected.
I’m using Arch, btw.
Seems like your pc isn’t affected because you don’t have a C drive? Try create a C drive and see if there’s an issue.
Fedora’s better ;) ~I posted this in a jocular mood, don’t take it seriously~
I think I’m affected because I can’t access the C: Drive.
I’m using Debian, btw.
I think I’m affected because I can’t locate a c: drive.
I’m using Mint, BTW.
I managed to park over half the c:drive. I drive an X5, BMW.
I can’t spot my c: from this altitude, in my G6
There’s your problem. You should be using Arch.
I use slackware, btw.