Install log for Backup Exec shows the following error :
MSI (c) (A0:C0) [10:17:17:737]: Note: 1: 2262 2: Binary 3: -2147287038 DEBUG: Error 2851: The data for the icon InstallManager_DLL is not valid Internal Error 2851. InstallManager_DLL DEBUG: Error 2835: The control ErrorIcon was not found on dialog SetupError Internal Error 2835. ErrorIcon, SetupError MSI (s) (B8:C4) [10:17:21:644]: Product: Veritas Backup Exec -- Internal Error 2503.
MSIexec.exe could not write to C:\Temp
Make sure the TEMP folder on C drive can be browsed.
Add full permission to the SYSTEM account and logged in user.