Where does Backup Exec (Versions 9.x to 2010 R3) store the licensing information?
The Besernum.xml file contains all licensing information for Backup Exec and can be found in the following directories:
12.5 | 2010 | 2010 R2 | 2010 R3 :
Windows 2003 and earlier machines: "C:\Documents and Settings\All Users\Application Data\Symantec\Backup Exec\"
Windows 2008 and Vista machines: "C:\ProgramData\Symantec\Backup Exec\"