Hi !
This video-tutorial clearly showed how to avoid problems generated while zipping a geodatabase file format in ArcMap. Geodatabase does not follow the conventional way of zipping, rather it demands a unique protocol to be maintained. This tutorial will be helpful to grasp all details regarding this issue.
Channel Link: / @latlongcoder
please check out my other tutorial as well:
1. • Python Scripting : Buffer Analysis in Arcp...
2. • How to make zipped file from Shapefile in ...