When you install a PU, SCU, or Quick Fix the Installation wizard displays an error regarding validation of the digital certificate failed and shows a path to a .cab file.
The setup will exit now as the installer has failed to validate the digital certificate for the following files: \n <Path and Filename in error varies>
The certificate changed in which the updates are validated against in Feb 2014.
There for with restrictive security policies may prevent the Symantec CCS system from validating the files because the new certificate may not be able to be installed to the Certificate Store.
You must manually install the VeriSign Class 3 Primary CA Certificate - G5 to the Trusted Root Certificate Store.
To install this certificate for the Domain, contact the domain administrator to ensure internal policies/procedures are followed.
To install this certificate to the local machines Trusted Root Certificate Store
Install the PU, SCU, or Quick Fix.
Symantec CCS is in a zone with a restrictive security policies applied.