connection to the server failed or was dropped - Microsoft ...
answers.microsoft.com › en-us › outlook_comApr 28, 2019 · connection to the server failed or was dropped. I have a new 27" MAC running Office 2019 which includes Outlook version 16.24. I constantly get the message below and it's causing havoc with my email accounts linked to Outlook including gmail, BT Internet PoP3 and IMAP, other IMAP accounts. I am sure that this message is causing sync problems as the number of emails displayed on Outlook on my iPhone is different to those shown on my MAC.