Outlook is always an issue in unattended mode.Kindly provide the solution for the same

  • Get Outlook Mail Messages: The operation has timed out.
  • Send Outlook Mail Message: The remote procedure call failed. (Exception from HRESULT: 0x800706BE)
  • Emails getting stuck in Outbox.(We need to manually push the emails)

What would be the root cause of it? And what will be its permanent fix?


Is Outlook application active at the time of BOT running ? If not then launch the Outlook application initially and then try once.

Outlook is active only. In one flow initially send outlook, get outlook are working,
in the middle or at the end, am facing this issue


Keep Send Outlook Mail Message and Get Outlook Mail Message activities inside Retry Scope activity and mention retry number as 3 and Retry Time interval. Then it will retry upto 3 times if is failed.


The outlook installed is microsoft 365.

Whether that might be the isssue