Microsoft has started to reject connections to ExchangeOnline webaccess unless you use at least TLS 1.2, during this week. This can cause your Exchange Connector to stop connecting to it’s mailbox, if you use M365.
To correct this, you need to add some registry keys to make .NET and Windows to use a higher TLS version as default.
More about this on these posts:
https://tdemeul.bunnybesties.org/2021/06/troubleshooting-scsm-exchange-connector.html
