Hello,
1 : Open the registry editor
2 : Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\SYMANTEC\Backup Exec for Windows\Backup Exec\Engine\Backup
3 : On the menu bar, select Edit | Add Value
4 : In the Value name field, type in "Fail Jobs On Corrupt Files"
5 : For the Data Type, select REG_DWORD
6 : When prompted for the Data, type in "0" (without the quotes)
7 : Click OK