A family of Microsoft word processing software products for creating web, email, and print documents.
Hi Kathie,
To undo the log files changes, you can just delete the key value in [HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Common\Logging] which I asked you to create in registry.
It is important to narrow down the problem via creating a new user account, you can refer to this article: Create a user account in Windows.
At mean time, the reason of creating a new user account is that we need to confirm whether the problem still persists in a brand new environment.
And we are sorry to hear that you don't want to use Office 365 and the inconvenient that the problem has brought to you so far, but if you want to continue the troubleshooting, we welcome you come back any time.
Regards,
Tisky