- Plesk Onyx for Windows
File Manager loads slowly on every domain - from 20 to 60 seconds.
System tool at This PC > right click on drive > Properties > Tools > Check does not find any errors in the file system.
Symantec Endpoint Protection installed in the system.
Symantec Endpoint Protection prevents
filemng backend utility from functioning fast.
Check the settings of Symantec Endpoint Protection or disable it at all.
On Windows Server 2016 disable Windows Defender.