Backup Exec installation log (BKUPINST2014.htm)
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06-27-2014,08:15:33 : Executing runtime installer package vcredist_x64.exe.
06-27-2014,08:15:33 : H:\BE\WINNT\INSTALL\VCRedist\V11.0\vcredist_x64.exe /quiet /install /norestart /log "C:\ProgramData\Symantec\Backup Exec\Logs\V11.0_x64_msruntime_install.log"
06-27-2014,08:15:49 : Return Value of Microsoft Visual C++ 2012 Runtime : 2147944003
+ 06-27-2014,08:15:49 : ERROR: Failed to execute VC 11.0 runtime installer. Error code 2147944003.
+ 06-27-2014,08:15:49 : Review this log file for details: C:\ProgramData\Symantec\Backup Exec\Logs\V11.0_x64_msruntime_install.log
06-27-2014,08:15:50 : The return value for Microsoft VC++ Redistributables (x64) returned error code: 2147944003
Windows Application Event Log:
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Microsoft VC++ Redistributables (x64) returned error code: 2147944003
Product: Microsoft Visual C++ 2012 x64 Minimum Runtime - 11.0.60610 -- Error 1336.There was an error creating a temporary file that is needed to complete this installation.
Folder: C:\Windows\Installer\MSIA3BD.tmp. System error code: 80
Error 1336.There was an error creating a temporary file that is needed to complete this installation. (Figure 1)
Figure 1

The Installation of Microsoft Visual C++ 2012 Redistributable fails to install halting the installation process due to an existing tmp file in C:\Windows\Installer folder.
ERROR_FILE_EXISTS
80 (0x50)
The file exists.
Remove the temp (.tmp) file from C:\Windows\Installer\ matching windows applicaton event log.