ERROR_DIR_NOT_ROOT 0x80070090

Error code 144 · HRESULT 0x80070090

WINDOWS

The directory is not a subdirectory of the root directory.

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_DIR_NOT_ROOT is a Windows error code (system error 144, returned as HRESULT 0x80070090) reported by Windows. Its official message is: “The directory is not a subdirectory of the root directory.”

How to fix ERROR_DIR_NOT_ROOT

  1. Verify the path/file actually exists and is not blocked by antivirus quarantine
  2. Reinstall the application that raised the error to restore missing files
  3. Check the full path spelling (long paths >260 chars need a registry opt-in)

Related errors

ERROR_DIR_NOT_EMPTYERROR_DIR_EFS_DISALLOWEDERROR_SAME_DRIVEERROR_BUSY_DRIVEERROR_IS_SUBST_PATHWU_E_NOT_APPLICABLEWU_E_PT_WINHTTP_NAME_NOT_RESOLVEDWU_E_PT_HTTP_STATUS_SERVICE_UNAVAIL

Source: Microsoft WinError.h

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