Microsoft Office applications have a built-in Safe Mode feature. This helps when you can’t use Office normally. Perhaps Word crashes every time you open it, or maybe Excel crashes when you open a single file. You can start the application in Safe Mode and there’s a good chance it will work normally.
When you start an Office application in Safe Mode, it will load without any add-ins or extensions, and without toolbar or command bar customizations. Any recovered documents that would normally be opened automatically will not open. AutoCorrect and various other features won’t work, and preferences can’t be saved.