Hi Reno,

Kindly check the below link

https://support.microsoft.com/en-us/kb/2807668?wa=wsignin1.0

Thanks 

• Proposed as answer by Niko.ChengMicrosoft contingent staff, Moderator 4 hours 42 minutes ago

hi,

i created the group (security group) but i'm not sure what it means by "grant Admistrators and NetworkService full access to the group" since it's not a file where you grant NTFS access to it. does it mean make those two a member of the group?

Open Active directory Users and Computers >> View >> advanced features >> go to ur security group and get  proprietaries >> security >> add the Admistrators and NetworkService.

right, just when i'm getting the hang of 2010, we migrated to 2013. last night, a database got dismounted and when i checked from ECP, it says the content indexed is failed. knowing how to fix this in 2010, i proceeded issuing "Update-MailboxDatabaseCopy identity DBname\ServerName CatalogOnly" only to be presented with an error that says the database is active and it can only be done on a passive database.

so i went ahead and stopped the Exchange Search and Exchange Search Host Controller services. deleted the folder with a long string name (along with the subfolders) where the database is located, restarted Exchange Search and Exchange Search Host Controller services, and waited.. it took far longer than i would expect if done in 2010 for the database is only 800GB in size.

btw, the database is mounted (or dismounted in this case) on server01. it have a copy on server02. unable to wait, i restarted server01 and then server02. after sometime the dismounted database is mounted with a healthy content index.

i'm just not sure what fixed it. maybed i should've waited longer for the index to rebuild? also, i noticed that Windows Server 2012 takes longer for services to come up compared to a Windows Server 2008 R2 installation. maybe that could have added to the long index rebuild.