Please provide the following information:
1. Is InDesign installed on the default path?
2. Do you have any special character in the path where InDesign is installed? Like username has special characters.
Also, please provide a copy of you preferences, you can zip them and email to firstname.lastname@example.org.
Anasuiya GuptaPer commented
Same problem for me. I can see and select the items in my first library but i cant switch to f.e. Adobe Stock. It´s wet frustrating and i worked as designed earlier.