Restore Registry from Automatic Backup: Boot into Recovery Mode: Hold Shift while clicking Restart
👇 See all 3 solutions belowWhat is Error 1393?
Windows System Error Code 1393, known as ERROR_DISK_CORRUPT, is a Security & Privileges error that occurs during security, authentication, and user privileges. The error indicates that: The disk structure is corrupted and unreadable. When this error is encountered, the Windows operating system was unable to complete the requested operation within the security services subsystem. The error code 1393 is returned by the GetLastError() function and provides developers with a specific identifier to diagnose the root cause of the failure. The symbolic name ERROR_DISK_CORRUPT maps directly to this numeric code and is commonly referenced in Microsoft documentation, developer forums, and system logs. Understanding this error and its context within security, authentication, and user privileges is essential for effective troubleshooting.
Common Causes
- Malware or aggressive cleaners modified critical registry keys
- A failed software installation or update corrupted registry hives
- Power loss during Windows shutdown caused registry file corruption
- Manual registry editing without proper backup went wrong
Fixing Permission Denied (0x80070005) and Access Violation Errors
An encyclopedia on Windows NT File System (NTFS) permissions, taking ownership via command line, and surviving 0x80070005 Access Denied errors.
Read the full guide →Step-by-Step Solutions
- Boot into Recovery Mode: Hold Shift while clicking Restart
- Go to Troubleshoot → Advanced Options → Command Prompt
- Run: copy C:\Windows\System32\config\RegBack\* C:\Windows\System32\config\
- Type 'Y' to overwrite each file when prompted
- NOTE: On Windows 10 1803+, RegBack may be empty; use System Restore instead
Video Tutorials
Diagnostic Command
Run this PowerShell command to find related events in your system log:
Get-EventLog -LogName System -Newest 20 | Where-Object {$_.Message -like "*1393*" -or $_.Message -like "*ERROR_DISK_CORRUPT*"} | Format-List💡 Open PowerShell as Administrator, paste the command above, and press Enter.
Prevention Tips
- ALWAYS export a registry key before modifying it (right-click → Export)
- Avoid 'registry cleaner' software — they often cause more problems than they solve
- Use System Restore points before installing new software or drivers