Layers not editable ArcGISPRO
The first thing I would check are the Selection & Editing tabs on the Contents pane. By default, they show up on the left-hand side when you're looking at a map, unless you've moved them.
Circled in A are the two tabs in question. The blue-shaded one is the selection tab; uncheck things to make them unselectable in the map, or vice versa.
The one with the pencil is the edit tab. Same thing: Unchecked means I can't edit it, and checked means I can. But also, notice those exclamation points circled at C. Those mean I don't have permission to edit those data. That's something I pulled from our organization's SDE that's controlled by a different department; I have read-only access to them.
If you were able to edit in Desktop, but not in Pro, I would predict the problem is likely just them being unchecked for some reason. If you are getting the exclamation points, though, I would talk to whomever manages the database you're accessing.
