Further, start the application again to check if the error has been fixed. On June 25th, 2019, the Outlook Team made a change to the service to fix this issue. If you are still seeing this issue, restart Outlook a couple of times so it can pick up the service change. Besides this, if you are using any anti-virus software, keep them temporarily shut dow NAKIVO Backup & Replication is a universal data protection solution that can protect not only Office 365 but also virtual, physical, and clo...