We are unable to send teams chat message to another tenant.

Iniobong Nkanga 1,691 Reputation points
2023-05-03T14:48:31.4733333+00:00

Hello,

please I need your help on this issue.

We are unable to send teams chat message to another tenant.

This has never worked. We are trying to configure 2 tenants to communicate with each other. Silxxxx.com (have explicitly allowed realdevlabs.com) and realxxxx.com (allowed all domains externally to communicate).

 

The error is when searching for the person in another tenant/company.

1st screenshot is Real Dev Labs and the 2nd is Silvprop.

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Microsoft Teams
Microsoft Teams
A Microsoft customizable chat-based workspace.
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  1. Brice Vanderstraeten 105 Reputation points
    2023-05-03T21:01:51.4433333+00:00

    Did you already use the troubleshooting tools from microsoft

    https://aka.ms/TeamsFederationDiag

    Enter the email of an affected user and the domain that you try to reach and wait for the result.

    Do it also from the other domain in case of