Backup Exec Install Log:
C:\ProgramData\Veritas\Backup Exec\LOGS\BKUPINST20.html or BKUPINST21.html or BKUPINST22.html.
DIFXAPP: ERROR: Could not add driver store reference to the service.
DIFXAPP: ERROR: The driver installation failed. Attempting to undo system changes ... (Error code 0x643: Fatal error during installation.)
DIFXAPP: ERROR: encountered while installing driver package 'C:\Program Files\Veritas\Backup Exec\VirtFile\VirtFile.inf'
DIFXAPP: ERROR: InstallDriverPackages failed with error 0x643
ERROR: Installation failed with error 1603
Patch failure : V-225-136: The patch failed to install. Return code: 1603
Backup Exec Feature Pack Verbose Install Log (FP-6.cab/txt, FP-5.cab/txt, FP-4.cab/txt)
C:\ProgramData\Veritas\Backup Exec\LOGS\.
DIFXAPP: INFO: RETURN: DriverPackageInstallW (0x65B)
DIFXAPP: ERROR: encountered while installing driver package 'C:\Program Files\Veritas\Backup Exec\VirtFile\VirtFile.inf'
DIFXAPP: ERROR: InstallDriverPackages failed with error 0x65B
DIFXAPP: RETURN: InstallDriverPackages() 1627 (0x65B)
CustomAction MsiInstallDrivers returned actual error code 1603 (note this may not be 100% accurate if translation happened inside sandbox)
Action ended InstallExecute. Return value 3
OR
DIFXAPP: INFO: RETURN: DriverPackageInstallW (0x643)
DIFXAPP: ERROR: encountered while installing driver package 'X:\Program Files\Veritas\Backup Exec\VirtFile\VirtFile.inf'
DIFXAPP: ERROR: InstallDriverPackages failed with error 0x643
DIFXAPP: RETURN: InstallDriverPackages() 1603 (0x643)
Action ended InstallExecute. Return value 3.
VirtFile driver update error.
V-79-57344-38721 - Failed to mount one or more virtual disk images
V-79-57344-844 - Cannot complete the operation because the Virtual File Filter (VFF) driver cannot be found. Ensure that the Agent for Microsoft Active Directory is installed and that the VFF driver is enabled and then retry. Alternatively, disable Granular Recovery Technology (GRT) and then retry
V-79-57344-65193 - The backup selection '\\ExchangeServer\Microsoft Information Store\Database'
was not successfully processed for Granular Recovery Technology (GRT). The Database Recovery
failed with Error '*Null*'. You will not be able to restore individual items for this backup
selection.
V-79-57344-4611 - An error occurred creating or accessing the directory \\.pdvfs\PFUSAM228WBAK02\2\BEData\STHVMDK specified for this operation. Ensure that the directory is accessible and can be written to.