I'm working a FLOW and the last step is a Record Update. Drag & Drop the component and when setting it I cannot pick the Campaign object. As an alternative, I did a Fast Lookup to bring the Campaign Record, update fields and as last step a Fast Update and when saving the FLOW I got the message: Flow Can't Update Campaign object.

Sharing rules are Public Full Access
My current user (when creating the Flow) is Sys Admin
 

I'm working a FLOW and the last step is a Record Update. Drag & Drop the component and when setting it I cannot pick the Campaign object. As an alternative, I did a Fast Lookup to bring the Campaign Record, update fields and as last step a Fast Update and when saving the FLOW I got the message: Flow Can't Update Campaign object.

Sharing rules are Public Full Access
My current user (when creating the Flow) is Sys Admin