| Error# | Description |
| 0 | Insufficient system memory or corrupt EXE file |
| 2 | File was not found |
| 3 | Path was not found |
| 5 | Sharing or network-protection error |
| 6 | Library required separate data segments for each task |
| 8 | Insufficient memory to run the program |
| 10 | The Windows version was incorrect |
| 11 | EXE was not a Windows application or error in EXE program file |
| 12 | Application was designed for a different OS |
| 13 | Application was designed for MS-DOS 4.0 |
| 14 | Unknown EXE file type |
| 15 | The application is a real-mode application ( for earlier Windows version) |
| 16 | Application is already running and cannot have multiple instances |
| 19 | EXE file is compressed. It should be uncompressed before use |
| 20 | A DLL necessary for the EXE was found to be invalid |
| 21 | The application requires Microsoft Windows 32-bit extensions |