What does Windows error code 193 (ERROR_BAD_EXE_FORMAT) mean? Status / error code: Category: Constant name: Source: Operating System: Description: %1 is not a valid Win32 application. Could be also: ConstantTypeOS SPECIAL_POOL_DETECTED_MEMORY_CORRUPTIONBugCheck CodeWindows Looking for a different code? Search another status or error code.