Using older versions of Outlook for Mac in business environments
Hello, I warmly welcome you to the Community. I'm Israel and it is a pleasure to be able to support you today.
Please to isolate the problem, answer me:
- Is this account a personal account or corporative account?
- What happen if you open the webmail?
- Did you any setting change recently?
- If you are using Exchange server account, you should see this
article about this issue:
https://docs.microsoft.com/en-us/exchange/troub...
Virtual Greetings and have a nice day!