Task '(my email)@Outlook.com' reported error (0x8DE00005) : 'There is an error synchronizing your mail account. Please verify your account is configured correctly by first accessing your mail on the web. Error: 3219. Server. An error occured in looking up the user's information in mserv. '

Task '(my email)@Outlook.com' reported error (0x8004102A) : 'Error with Send/Receive. There was an error synchronizing your folder hierarchy. Error : 80041004.'

Task '(my email)@Outlook.com - Sending' reported error (0x80040126) : 'The operation cannot be performed because the connection to the server is offline.'

When cutting pasting these errors reported in Outlook, they are actually in reverse order to what I'm presenting here (if that makes any difference).

Up to last time I logged in at this workstation several days back, no issues at all with the program and emails for months on end.