"Kerberos" authentication failed while trying to access EMC or EMS

My colleague have this problem when she want to access EMC Microsoft Exchange: 

After I check the problem, I could see that she don't have this folder.

C:\Users\{user}\AppData\Roaming\Microsoft\Exchange\RemotePowerShell\server.domain.com

So, I copied mine but she still cannot access.

Then, I go to this folder and delete the Exchange Management Console file.
C:\users\\AppData\Roaming\Microsoft\MMC\Exchange Management Console
Close EMC and reopen it.

And its working... hahaha.. very good... :)