During the recovery process, Windows Server Backup mounts the Virtual Hard Disk (VHD) file that contains the backup as a read-only volume. Additionally, FSRM checks for new volumes on the system every 10 seconds. When FSRM finds the read-only volume and then tries to open and write to it, the operation is not successful. Therefore, event ID 8249 is logged every 10 seconds.
Update informationTo resolve this issue, install update rollup 2855336. For more information about how to obtain this update rollup package, click the following article number to view the article in the Microsoft Knowledge Base:
Article ID: 2856667 - Last Review: Jul 9, 2013 - Revision: 1