Locked Out: Microsoft Investigates Critical Windows 11 Bug Blocking C Drive Access on Samsung PCs
ID: 5bc48c01-246d-57cc-99d3-ea0e02fa9d55
STIX ID: report--5bc48c01-246d-57cc-99d3-ea0e02fa9d55
Feed Name: securityonline.info
Threat Score
Microsoft confirmed that after installing the February 2026 cumulative updates some Windows 11 systems (24H2 and 25H2), primarily Samsung Galaxy Book 4 notebooks and certain Samsung desktops, may receive “access denied” errors for the C: drive. The condition prevents many applications from launching and blocks typical remediation actions; Microsoft is investigating and has linked reports to Samsung software (Galaxy Connect) but a definitive root cause and patch are pending.
Your team is not currently subscribed to this feed. You must subscribe to it in order to see this post.