Microsoft and Samsung have identified a bug causing C:\ drive access issues and application failures on some Samsung Galaxy Book devices running Windows 11 (24H2 / 25H2).
The root cause?
⚠️ The Samsung Galaxy Connect / Continuity Service app, used for screen mirroring and device integration.
Affected users reported:
• Problems accessing files on the C:\ drive
• Apps failing to launch
• Permission and admin privilege errors
• Difficulty uninstalling updates or collecting logs
Microsoft temporarily removed the app from the Microsoft Store, and Samsung has now released an updated version.
To fix affected systems, Microsoft published a 29-step recovery procedure that restores default Windows permissions and drive ownership.
🔐 Key takeaway: even legitimate system integration tools can accidentally break core OS permissions and security controls.
Always keep device utilities up to date and monitored, especially when they modify system-level permissions.
