ERROR_LOCAL_USER_SESSION_KEY 0x80070517

Error code 1303 · HRESULT 0x80070517

WINDOWS

No encryption key is available. A well-known encryption key was returned.

Windows troubleshooting diagram: Device Manager warning and a system file scan
Windows errors: check drivers, system files and Event Viewer, in that order.

What it means

ERROR_LOCAL_USER_SESSION_KEY is a Windows error code (system error 1303, returned as HRESULT 0x80070517) reported by Windows. Its official message is: “No encryption key is available. A well-known encryption key was returned.”

How to fix ERROR_LOCAL_USER_SESSION_KEY

  1. Reboot once — many one-off system codes disappear with a clean restart
  2. Repair system files: 'sfc /scannow' then 'DISM /Online /Cleanup-Image /RestoreHealth'
  3. Find the source in Event Viewer → System: filter for this exact code and open its provider link

Related errors

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Source: Microsoft WinError.h

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