Hi @Gary Richardson
You are seeing this error message, right?
After doing some research about this 'Adding this place to your office account" message, it usually affects Gmail accounts. Are you using Gmail account? If you are using another type of account, please specify it. Please also provide your Classic Outlook version. You can check this in File > Office account > About Outlook.
If you are using Gmail, I found this article that might help: Unable to add a Gmail account to classic Outlook - Microsoft Support
Please follow 2 steps in the article and then try to sign in again. Please try and let me know how it goes.
If you have another type of account, please provide it. I look forward for your reply.
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