0x000003FC
ERROR_KEY_HAS_CHILDREN
Cannot create a symbolic link in a registry key that already has subkeys or values.
win32decimal 1020
Matched as: the code as given (hex)
Log a case with no specific solution
Source: System Error Codes (1000-1299) - Win32 apps · CC-BY-4.0 (MicrosoftDocs/sdk-api, repo license verified 2026-10-09) · retrieved 2026-10-09