Dear Belliab,
I'm Renzo, I'll help you with your question.
You could try with following process:
- Run Word in Safe-mode, tap and hold "Ctrl" key the open the app, should be appears a pop up window that you try to run Word in Safe-mode, click on Yes, then check out app behavior.
- If it's work fine, the issue could be related to an add-in in the app, you should remove the add-ins installed on the app.
https://support.microsoft.com/en-us/topic/view-...
- If previous process does not work, in search-box of Windows toolbar, type: Control Panel and open it.
Click in Programs > Uninstall a program, find Microsoft Office 365, right-click over it > click on "Change" then "Quick Repair".
If does not work, you can use an "Online Repair".
Take a look at below link for further information:
https://support.microsoft.com/en-us/office/repa...
- If the error persists, you should uninstall Office with the Support tool, refer to "Option 2" in following link:
https://support.microsoft.com/en-us/office/unin...
Note: before uninstall you will need the original activation "key" to install it again, or depending if your license is associated to your account.
- Then re-start your PC and Install the last Office version from following link:
https://support.microsoft.com/en-us/office/down...