| /automation | Opens Excel ignoring any add-ins, templates or files that are in the "xlStart directory" and the "At start-up open all files in" directory. |
| /e | Opens Excel in Embedded mode which prevents the default workbook Book1 from being created. |
| /embedded | Same as above |
| /i | Opens Excel with a maximised window. Any previously saved window sizes are ignored. |
| /I | Opens Excel and loads a particular add-in. |
| /m | Opens Excel with a new workbook containing a single Excel 4.0 macro sheet. This is now redundant. |
| /o | Opens Excel forcing it to re-register itself in the Window Registry. |
| /p folderpath | Used when specifying a folder to be used as the default folder. |
| /r filepath | Opens Excel with a specific file in read-only mode. You must include the path and filename afterwards. |
| /regserver | Forces Excel to re-register itself in the Windows Registry and then quit. |
| /s | Opens Excel ignoring any add-ins, templates or files that are in the "xlStart directory" and the "Alternate Startup" directory. |
| /safe | Same as above |
| /safemode | Same as above |
| /unregserver | Forces Excel to unregister itself in the Windows Registry and then quit. |