Please try these options one by one and check after each option.
1. Try repairing your office installation (Quick repair is good enough). Try repairing your Office installation. First try Quick Repair (takes 5 - 10 mins) , if that doesn't help then try Online Repair (Takes more than 30 mins but less than 1 hour in general)
https://support.office.com/en-us/article/Repair...
2. Sometimes, add-ins can cause problems. To determine, if add-in is a problem start your application in safe mode and see if problem has gone away.
To start in Safe Mode -
Hold CTRL key and click on application icon and don't release the CTRL key till it asks you for Safe mode confirmation.
If yes, then start application normally and disable add-ins one by one and start application again every time you disable an add-in to determine the culprit add-in.
To disable add-in > File > Options > Add-ins > Down below you have Manage: Com Add-in : Press Go > Untick the Add-ins to disable and tick to enable them
3. Many third party applications also cause the problem like Tuneup Utilities, Abby Finereader, Kaspersky & other Anti Viruses etc. If you want to know if some program is conflicting -
Boot your computer in Clean boot mode and then start the application. If it works successfully, then some program is conflicting with this.
Refer to the section - How to determine what is causing the problem after you do a clean boot.
Don't forget to do - Reset the computer to start normally after clean boot troubleshooting.
https://support.microsoft.com/en-us/help/929135...
4. Sometimes, this is caused due to application not being able to access the default printer. Close all office applications and change your default printer through Start > Devices and Printers to another printer. It may be some physical one or One Note or XPS or PDF or anything else. If this is the problem, then you will need to update your printer driver for default printer.
5. Login to Windows with a new user profile and see if problem is resolved.
Do let me know if you have any more question or require further help. If above didn't work, I will supply more troubleshooting steps to solve this problem.