No emails sending


he operation failed. The messaging interfaces have returned an unknown error. If the problem persists, restart Outlook. The operation failed. An object cannot be found.

I receive this error everytime UiPath hits a send outlook mail message activity? i tried to update packages still getting the same error

Any help please?

Outlook is installed, started, configured?

Yes, i was sending on behalf of accounts within sharedmailboxes. I had a IF logic in the sendonbehalf… it randomly stopped working? any idea why?