I apologize if this is not the correct forum. We have been using the Set-MailboxMessageConfiguration cmdlet to update our users' email signatures in Outlook on the web. Suddenly, and with no change on our part, the cmdlet has started to have no effect. Any guidance on the matter would be greatly appreciated.
This bug has been reported here and here and unfortunately there has been no guidance whatsoever despite this affecting our Production users. Thank you in advance!