Event ID 9331 and 9335 generating OAB in Exchange Server 2010

Hello folks, During an Exchange Server 2007 to Exchange Server 2010 migration the OAB stop working and during my analysis I found these following errors on the Generation Server. OABGen encountered error 80004005 (internal ID 50103b7) accessing the public folder database while generating the offline address list for address list ‘/’. – \Default Offline Address Book OABGen encountered error 80004005 while cleaning the offline address list public folders under /o=OrgName/cn=addrlists/cn=oabs/cn=Default Offline Address Book.  Please make sure the public folder database is mounted and replicas exist of the offline address list folders.  No offline address lists have been generated.  Please check … Continue reading Event ID 9331 and 9335 generating OAB in Exchange Server 2010