When clicking on the search button of the ArcMap nothing happens. Even the search window is not coming. But ArcCcatalog it is working. ArcMap version is 10.3. OS widows 8.
Try Resetting your ArcGIS application profile. Hopefully, this should fix the issue.
I repaired ArcGIS installation and also reset the Application profile but still the issue is not solved.
Supun,
~Shan