Re: Complete Outlook Task then complete Planner Task
Hi @ NiclasM,
Could you please share a screenshot of the configuration of your flow?
What is the problem you meet when the flow runs?Will the trigger "when a task is completed (Outlook Task)" run?
I have made a test on my side and have created a flow as below:

However, when I set the task is completed, the trigger wouldn't be fired in the flow.
Do you have the same issue as me?
I would post this issue to my product team. If the issue is solved, I would reply here.
Regards,
Alice Zhang