Teams Chat

After signing in to Teams on your mobile device, you may find that messages fail to send, showing a red exclamation mark or a spinning clock icon. This usually happens because the mobile client has not fully synchronized with the server after the sign-in process. The cause is often a stale authentication token or an … Read more

When you try to send a message in Teams to a contact whose email address belongs to a shared mailbox, the message may fail with an error such as “We couldn’t send your message.” The root cause is that Teams treats shared mailbox addresses as unverified external recipients, and your organization’s external access policy blocks … Read more