We have been applying the fix provided by Microsoft to all accounts experiencing this issue. There may be some further instances where users have not used the Outlook client for some time and these will be dealt with in the same way.
Some staff members may be experiencing connection issues with the Outlook desktop client. We have received a fix from Microsoft, which we will be performing on machines where a ticket has already been logged. Anyone experiencing this issue should log a ticket with the Service Desk and use Outlook Web Access in the meantime to access email.
We thank you for your patience whilst we work to deliver the fix to those affected.