This might be issue with commandlines not generated properly for MSI updates in PMS 6.2
Please follow below steps for the same.
To do this make the following changes:
1. Edit the Run with Rights to ensure the user is logged on for Patch Management Solution 6.2:
◦Go to the Console > Tasks tab > Software Management > Patch Management > Software Update Task > Microsoft
◦Open the Software Update Task that has been created for this bulletin
◦Click the Advance tab in the right pane and locate Command Line
■Click on the Command Line Link
■Go to the Command-line options:
■ Command-line Option Dialog box appears, “Altiris Recommended“ option is by default selected.
■Click "Apply", "Ok"
■ then it will shows “msiexec /i filename.msi REBOOT=ReallySuppress /qn“ in Command Line.
After doing this modification update is installing properly on respective setups. Please find attached image for PMS6.2 before and after modification(CommandLine PMS 6.2.JPG)
https://www-secure.symantec.com/connect/sites/default/files/CommandLine%20PMS%206.2_0.JPG
We have done this for other MSI updates as well(http://www.symantec.com/business/support/index?page=content&id=TECH180924)