When I have a mapped drive to my sharepoint on premise document library and try to drag / drop a folder from my desktop, the files are being uploaded as empty / corrupt files for some users, but working fine for some other users. User permissions are exactly the same for all users.. what could the problem be?
To troubleshoot the issue, check things below:
Check the user permission for the users who have the empty or corrupt files on the file level.
Remove the users from the document library and re-grant the user permission for those users.
Create a new document library and map drive for the document library to check if the same issue will occur.