Today I tried to create an item in calendars using Nintex on Office 365. I configured a service account and an user account to impersonate. But my thworkflow kept giving me:

The request cannot be processed due to internal error.

I found an article by Danny Ong. However Danny is using the account. Where I’m using my service and I’m impersonating

Once I changed my service account to the problem went away.

My has a calendar within our domain where doesn’t have a calendar. This seems to be needed.