Additional chat-related features and issues within Microsoft Teams for business
Dear @Katherine Blake,
In this case, I recommend you contacting your IT Admin and ask them if Sharon is being seen as an external/guest/duplicate identity or whether a messaging policy/chat request state is stuck for your new work account in Teams. How do I find my Microsoft 365 admin? - Microsoft Support
In the meantime, kindly try these steps:
1> Try Teams on the web
Try to use Teams on web and check if the issue happens.
2> Clear Teams cache
Please refer to this article to clear Teams cache. Clear the Teams client cache - Microsoft Teams | Microsoft Learn
3> Reinstall Teams
In Start Menu, open Settings > Apps > Installed apps > Teams > three dots (...) > Uninstall
Download Teams desktop again via this link: Download Teams Desktop and Mobile Apps | Microsoft Teams [d9ee-f660-d97-4171]
I hope the information shared helps point you in the right direction. Please try the steps above and let me know if they work. If not, we can continue working together to narrow this down.
The first response may not always resolve the issue right away, but with your help and more details, we can work toward a solution.
As a moderator, I do not have the tools to investigate your specific account directly, as this is a support forum between users. Moderators and collaborators, including external Microsoft employees, may not directly intervene in the functionality of Microsoft products or access internal systems. Our role is limited to providing technical guidance on reported problems, requests, or ideas. However, I will do my best to guide you as clearly as possible.
If the answer is helpful, please click "Yes" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.