ERROR_FILE_SYSTEM_VIRTUALIZATION_UNAVAILABLE 0x80070171

What it means

ERROR_FILE_SYSTEM_VIRTUALIZATION_UNAVAILABLE is a Windows error code (system error 369, returned as HRESULT 0x80070171) reported by Windows. Its official message is: “The provider that supports file system virtualization is temporarily unavailable.”

How to fix ERROR_FILE_SYSTEM_VIRTUALIZATION_UNAVAILABLE

1. Verify the path/file actually exists and is not blocked by antivirus quarantine
2. Reinstall the application that raised the error to restore missing files
3. Check the full path spelling (long paths >260 chars need a registry opt-in)
4. Run 'chkdsk /scan' on the affected volume and read the report
5. Check disk health: 'wmic diskdrive get status' or CrystalDiskInfo SMART values
6. If errors return on a clean disk, replace the drive — sectors are degrading

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