The manual registration of Backup Exec using "BeUpdateOps.exe -AddBE -OptOut" fails with "Failed to register Backup Exec with LiveUpdate with an error code of 1603 -Now Exiting". (Figure 1)
Failed to register Backup Exec with LiveUpdate with an error code of 1603 -Now Exiting
In case of x64, one or some of the following files might be corrupted. This issue occurs even if one of them is corrupted.
C:\Program files (x86)\Symantec\LiveUpdate\
If there is a system that LiveUpdate of the same version works correctly on, please copy the above files from the system to problematic one and rerun "BeUpdateOps.exe -AddBE -OptOut".
Backup Exec 2010 R2 (However, the issue does not depend on the specific versions.)