TECH - Exchange 2010 : No existing ‘PublicFolder’ matches the following Identity. ‘\’.

TECH - Exchange 2010 :  No existing ‘PublicFolder’ matches the following Identity. ‘\’.

Error:
No existing ‘PublicFolder’ matches the following Identity. ‘\’.  Make sure that you specified the correct ‘PublicFolder’ Identity and that you have the necessary permissions to view ‘PublicFolder’.  It was running the command ‘get-publicfolder -getchildren -identity ‘\’ -server ExchangeServer

Solution:

1. I try to fix the homeMDB  homeMTA  in ADSI Edit but it's not fix my problem
2. I remove my admin mailbox and create it again. <- that's fix my problem.