How to fix Error 315 on Windows 11

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Windows 11 Error 315: “The Token Representing the Data is Invalid”

Why This Error Happens

Error 315 typically occurs when Windows encounters a corrupted or malformed security token during an authentication or data validation process, often linked to Data Protection API (DPAPI) operations or Windows Security component communication. This can result from corrupted user profile data, damaged registry entries related to credential storage, or an interrupted Windows Update that left token-handling files in an inconsistent state. In many cases, third-party security software or VPN clients interfering with Windows’ credential manager can also trigger this invalid token state.

Step-by-Step Resolution Guide

  1. Run the System File Checker (SFC) and DISM tools to repair corrupted system files:
  • Open Command Prompt as Administrator (right-click Start > Terminal (Admin))
  • Run: sfc /scannow
  • Follow with: DISM /Online /Cleanup-Image /RestoreHealth
  • Restart your computer once both commands complete.
  1. Clear the Credential Manager cache:
  • Navigate to Control Panel > User Accounts > Credential Manager
  • Remove any Windows Credentials or Generic Credentials related to the affected application
  • Restart the application to regenerate fresh tokens.
  1. Reset the Windows Security token cache via PowerShell (Admin):
  • Run: Get-Process -Name "*SecurityHealth*" | Stop-Process -Force
  • Navigate to C:\ProgramData\Microsoft\Windows Security Health\ and rename the folder to .old
  • Restart the service via services.msc, locating “Windows Security Service” and clicking Restart.
  1. Check and repair your user profile registry hive:
  • Press Win + R, type regedit, and navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList
  • Look for duplicate SID entries (e.g., ones ending in .bak) and back up/remove the corrupted duplicate.
  • Restart Windows Explorer via Task Manager to apply changes.
  1. Reinstall or repair the affected application/component if the error is tied to a specific program:
  • Go to Settings > Apps > Installed Apps
  • Locate the app throwing Error 315, select Modify or Repair if available; otherwise uninstall and reinstall.

Alternative or Verification Steps

  • Verify the fix: Reproduce the original action that triggered Error 315 (e.g., login, data sync, or file access) and confirm no error dialog appears; check Event Viewer (eventvwr.msc) under Windows Logs > Application for a clean log with no new Error 315 entries.
  • Alternative fix: If the issue persists, create a new local user profile (Settings > Accounts > Family & other users > Add account) and migrate your data—this bypasses a potentially corrupted profile-level token store entirely.