Hi @Mark Field
Thanks for visiting our forum. Microsoft Teams tag is mainly focused on the general issue of Microsoft Teams application troubleshooting.
According to your description, the Teams web client can log in normally, then it seems to be an issue with the client on your remote desktop. Please try these steps to troubleshoot:
Check that your hardware device meets the requirements. Hardware requirements for Microsoft Teams.
Log out and clear your login credentials. Make sure you sign back in with a stable network connection.
Check that the client is up to date.
If you're unlucky, try downloading the client again.
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