Additional features, settings, or issues not covered by specific Microsoft Teams categories
Do you have any operations before this issue occurred?Please check in your teams web if you are facing the issue as well. If yes you need to contact your admin.
- If the issue happen as well in teams online kindly check with your admin:
- Go to the Microsoft Teams admin center.
- Navigate to Org-wide settings > External access.
- Ensure that the option “Users can communicate with other Skype for Business and Teams users” is turned on
- Allow Specific Domains:
- In the same External access settings, you can specify which domains your users can communicate with.
- Select “Allow only specific external domains” and add the domains you want to allow.
- Verify User Policies:
- Ensure that the user policies allow external communication.
- Go to Users > External access in the Teams admin center and verify the settings.
- Invite External Users:
- You can invite external users to chat by entering their full email address or phone number in the Teams search box and selecting "Search externally".
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