Hi dear
We have exchange server 2013. first of all, we are create new mailbox database, because the size of C drive is low and we create new mailbox database in E drive and this database is mounted and the old database are dismounted. Now in some place we have error like "" The mailbox database is temporarily unavailable "".also when i want create new In-place eDiscovery & hold for searching in client mailbox we have same error "The mailbox database is temporarily unavailable."plz help me how i can fixe this error and also how can i search some mail or keyword in client mailbox with administrator account.thanks.