Hello, thank you for reaching out to Microsoft Q&A.
This can be a temporary software glitch.
- Unplug your Samsung mobile device from the PC.
- Restart your Windows 11 PC, then connect the Samsung device to a different USB port.
- Make sure you grant file transfer permissions on your Samsung device.
Then open File Explorer on Windows, double-click the internal storage device, and see whether it opens the DCIM folder and other internal folders.
If you are still having issues, run this command in an elevated Command Prompt window without your Samsung device connected.
sfc /scannow
Once finished, restart your computer and connect your mobile device.