As shown below my ArcToolbox icons have changed somehow, and I'd like to change them back.
Rebooting Arcmap helps but it will change back to folder icons after a while. How can I change them back?
I couldn't locate my Normal.mxt either. (ArcGIS 10.4)
Edit: apparently when I logged back in today, the error has ceased to appear so far. Restarting ArcGIS yesterday was no luck however. Not sure why, but will update if any issue arises.