Run as Administrator: Right-click the application → 'Run as administrator'
👇 See all 2 solutions belowWhat is Error 1394?
Windows System Error Code 1394, known as ERROR_NO_USER_SESSION_KEY, is a Security & Privileges error that occurs during security, authentication, and user privileges. The error indicates that: There is no user session key for the specified logon session. When this error is encountered, the Windows operating system was unable to complete the requested operation within the security services subsystem. The error code 1394 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_NO_USER_SESSION_KEY 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
- System resource conflict: There is no user session key for the specified logon session.
- User account lacks required permissions
- Group Policy restricts access
- Authentication credentials expired
Resolving Cryptographic Provider and Certificate Chain Errors (CRYPT_E_BAD_MSG)
An encyclopedia on resolving failing SSL/TLS handshake errors, root certificate trust issues, and Windows Cryptographic Services failures.
Read the full guide →Step-by-Step Solutions
- Right-click the application → 'Run as administrator'
- If Error 1394 (ERROR_NO_USER_SESSION_KEY) resolves, it's a permissions issue
- For permanent fix, right-click → Properties → Compatibility → check 'Run as administrator'
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Diagnostic Command
Run this PowerShell command to find related events in your system log:
Get-EventLog -LogName System -Newest 20 | Where-Object {$_.Message -like "*1394*" -or $_.Message -like "*ERROR_NO_USER_SESSION_KEY*"} | Format-List💡 Open PowerShell as Administrator, paste the command above, and press Enter.
Prevention Tips
- Apply least-privilege principle
- Audit user accounts regularly
- Keep security policies and AV updated