i can't send any message to any one in teams

Hi Met,

Thank you for reaching out and for sharing the screenshot.

Based on your description, it appears that you are having problem with communicating with people outside of your organization. However, Teams external account could have been not configured for both organizations. To resolve the issue, please reach out to your organization's IT admin and share these steps with them:

1. Check External Access Settings 

• Sign in to the Teams admin center > External collaboration > External Access. 
• Ensure that external access is enabled to allow communication with other organizations. 
• Check the Blocked domains list to see if the external user's domain is on it. 

2. Check the Other Organization's Settings 

• It's also possible that the other organization has disabled external access or specifically blocked your domain. 
• Please ask the IT Admin of the external organization to check their settings to ensure they allow communication with your domain. 

3. Check the affected user’s external access policy

Enabling external access for the organization may not be sufficient. The affected user must also have a policy that permits external chat. To do this, please review these steps:

• In the Teams admin center, open the external access policy-management area.
• Identify the policy assigned to the affected user.

• Open that policy.
• Verify that communication with users in other Microsoft 365 organizations is allowed.

• If the user has a restrictive custom policy:
  • Modify the policy, or
  • Assign a policy that allows external communication
• Save the changes. I hope this information is helpful. Please follow the steps above and let me know if it works for you.

Thank you for your patience and understanding. I look forward to continuing the conversation.  

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