0x000003EF
ERROR_FULLSCREEN_MODE
The requested operation cannot be performed in full-screen mode.
win32decimal 1007
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