Microsoft Word Command Line Switches

When trying to troubleshoot Microsoft Word startup problems, it can be very helpful to utilize the command line switches at startup.

"C:\Program Files\Microsoft Office\Office\Winword.exe" /a

/a - prevents add-ins from loading and prevents global templates from loading
/m - prevents any autoexec macros from executing
/s - safemode
/r - re-registers Word

Source and more switches: Microsoft Support KB210565