ERROR_ILLEGAL_DLL_RELOCATION 0x8007026F

Error code 623 · HRESULT 0x8007026F

WINDOWS

The system DLL … was relocated in memory. The application will not run properly. The relocation occurred because the DLL … occupied an address range reserved for Windows system DLLs. The vendor supplying the DLL should be contacted for a new DLL.

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_ILLEGAL_DLL_RELOCATION is a Windows error code (system error 623, returned as HRESULT 0x8007026F) reported by Windows. Its official message is: “{Illegal System DLL Relocation} The system DLL %hs was relocated in memory. The application will not run properly. The relocation occurred because the DLL %hs occupied an address range reserved for Windows system DLLs. The vendor supplying the DLL should be contacted for a new DLL.”

How to fix ERROR_ILLEGAL_DLL_RELOCATION

  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

ERROR_ILLEGAL_CHARACTERERROR_ILLEGAL_FLOAT_CONTEXTERROR_ILLEGAL_ELEMENT_ADDRESSERROR_EVALUATION_EXPIRATIONERROR_DLL_INIT_FAILED_LOGOFFERROR_QUOTA_LIST_INCONSISTENT

Source: Microsoft WinError.h

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