Exchange 2010 DAG GRT incremental backup job runs very slow and fails with error "V-79-57344-862" and "V-79-57344-936"
Exchange 2010 DAG GRT incremental backup job runs very slow and finally fails with error "V-79-57344-862 - The Backup Exec Agent for Microsoft Exchange was not used to create the last full backup of this database. You must use the Exchange Agent to run a full backup before you run a differential or incremental backup" and "V-79-57344-936 - The Backup Exec Virtual File Filter cannot complete a background process because of an internal error. (Minor errorcode: 0.0)"
For more details please refer to the following article: