Excel and Word won't open

Hi,

I am unable to open Excel and Word on my MacBook Air. I am able to open Outlook, OneNote and Powerpoint. Excel and Word do not crashhey ... they both attempt to open on the dock but then just disappear. So no error log to report.

I installed the Office update about three days ago, Version 16.15.0 (Build 18070902). I have used Excel since installing the update. Today the problem occurred. After the problem occured, I installed an update on my Mac, to MacOS High Sierra 10.13.6. This did not correct the problem.

I have uninstalled and reinstalled Officce. This has not fixed the problem.

I have switched wifi off and on. I cannot follow the instruction to turn the wifi off then open Excel then turn the wifi on, as Excel won't open.

I have restarted the computer a few times. This did not fix the problem.

I'd really appreciate some help!

Regards,

Tracy