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Failed to send
We are having errors in Microsoft Teams. Me and my coworkers can't send messages in Teams. We get "failed to send" How can we fix this?
This is not a problem since March, the 75M Teams do not have an issue. At the time of the original message in this thread there was an outage at Microsoft, it lasted a few hours and is long gone now.
In general the failed to send error would imply your network is blocking access to some of the Teams messaging URLs, perhaps through a proxy or other network device. Try it in a browser and bring up the F11 debug tools and you'll quickly see which addresses are not responding.
MANSEL645 Here in Brazil, we have the same error. I think it's a Global Error, so far I haven't seen any response from Microsft. I hope it will normalize as soon as possible.