Teams chat access to post for meetings

Hi @Lacroix, Wendy J, 

Is there any update from you? If yes, please feel free to let me know.

• Aside from the Guest role, can other users in your organization still post in the meeting chat as expected? YES
• Can the Guest still join the meeting but is now unable to post in the chat, even though they could do so previously? YES
• Does the Guest see the chat content but cannot send messages, or is the chat pane missing entirely? YES
• Have there been any recent changes to your meeting settings or Teams policies?  You can check this in the Microsoft Teams admin center by navigating to: Meetings > Meeting policies, then opening the policy assigned to your meeting organizer (or the global policy if applicable). Please check if "Allow meeting chat" is set to "On for everyone"? My options allow everyone to present, chat, and react.

• Is this issue affecting all Guests or only specific individuals? Only specific
• In the Microsoft 365 Admin Center, could you confirm that the Guest account still exists and hasn’t been disabled or removed? You can check this under Users > Guest users to ensure the object is still present. Yes she is an employee not outside guest
• Aside from the Guest role, can other users in your organization still post in the meeting chat as expected? YES
• Can the Guest still join the meeting but is now unable to post in the chat, even though they could do so previously? YES
• Does the Guest see the chat content but cannot send messages, or is the chat pane missing entirely? YES
• Have there been any recent changes to your meeting settings or Teams policies?  You can check this in the Microsoft Teams admin center by navigating to: Meetings > Meeting policies, then opening the policy assigned to your meeting organizer (or the global policy if applicable). Please check if "Allow meeting chat" is set to "On for everyone"? My options allow everyone to present, chat, and react.
•  
  • Is this issue affecting all Guests or only specific individuals? Only specific
  • In the Microsoft 365 Admin Center, could you confirm that the Guest account still exists and hasn’t been disabled or removed? You can check this under Users > Guest users to ensure the object is still present. Yes she is an employee not outside guest

Hi @Lacroix, Wendy J, 

Thank you for your response! 

In your last answer, when you mentioned “Yes, she is an employee not outside guest”. Could you please clarify whether she exists in your tenant as a guest user or as a member of your organization?  

If she is currently listed as a guest, I recommend trying to delete and re-add her as a guest user in your tenant. Then, re-invite her to the meeting and check if she is able to post messages in the meeting chat. 

If the issue continues to occur for this specific user, I'm afraid it may require investigation from the backend. The best way to proceed would be to report it to the appropriate support team. I'd love to help more, but due to limited access, I'm unable to fix the issue directly. 

I sincerely recommend creating a support ticket via Microsoft 365 Admin Center. You can create a support ticket by going to Support > Help & Support, and clearly describe the issue in your request.   

Note: If you are an end-user, please contact your IT administrator to follow these steps. 

Once the ticket is submitted, the support team has higher-level permissions and access to backend tools that allow them to investigate and escalate the issue properly. This would be the most efficient way to get it resolved. 

I hope this guidance has been helpful in supporting you through the next steps!  If it was, I’d truly appreciate it if you could mark my response as the Accepted Answer. 

If you have any further questions or need additional clarification, please feel free to let me know. I'm here and happy to assist.