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Microsoft Confirms Windows 11 Bug Crippling PCs, Blocking Access to Core Drive

ID: 34b7b6f8-28fb-59f3-a2f4-2f3aeae5b1a9

STIX ID: report--34b7b6f8-28fb-59f3-a2f4-2f3aeae5b1a9

Feed Name: TechRepublic Security

Threat Score
30/100

Date Published: 2026-03-17

Date Updated: 2026-04-23

Author: Aminu Abdullahi

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Microsoft confirmed a Windows 11 bug, traced to Samsung Galaxy Connect, that can produce the error “C:\ is not accessible – Access denied,” preventing access to the system drive and blocking many common apps and administrative operations on certain Samsung Galaxy Book and desktop models; Microsoft removed the app from the Microsoft Store and published recovery steps to restore default drive permissions.

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