After installing Service Pack 2 on Backup Exec 2012 the following error may be seen when trying to run backups.
0xe000fe3c - Before you can back up this source, you must purchase and install a license for the appropriate Backup Exec agent.
V-79-57344-65084 - Before you can back up this resource (<Servername>\Resource), you must purchase and install a license key for the appropriate Backup Exec agent.
License keys were installed but not enabled before Service Pack 2 was installed.
1. Open the license install wizard.(Figure 1)
2. Click next after confirming that the correct license is installed. (Figure 2)
3. Check the box next to the required licence to enable it. (Figure 3)
4. Click next and complete the license wizard installation.
Backup Exec 2012 SP2