Hi @Peter Burford,
Thanks for posting your question in the Microsoft Q&A forum.
To better assist you with the issue you're experiencing while accessing Microsoft Teams, I’d like to ask a few quick questions to better understand your situation:
Is this a business account provided by your organization? If so, are other users experiencing the same issue?
If possible, could you share a screenshot of the issue (please make sure to hide any personal or sensitive information)?
Have you tried signing in to Microsoft Teams via the web at https://teams.microsoft.com? This can help determine if the issue is specific to the desktop app.
In the meantime could you try to uninstall the Microsoft Team then try to reinstall to see if the issue persist? You could refer this link: Uninstall Microsoft Teams - Microsoft Support
I'm sincerely sorry for the inconvenience that you've encountered. But I need to know more about your situation so I can help you better. I appreciate your patience and are here to help. Looking forward to your response
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