After installing PGP 10.2.1 MP1, you install or upgrade Endpoint Protection 12.1. During the upgrade, the computer stops responding with a blue screen error.
Symantec has identified a solution and released a fix in PGP 10.2.1 MP2 or above.
Please download current version Symantec Encryption Desktop at https://fileconnect.symantec.com
As a workaround for customers using PGP 10.2.1 MP1 that wish to install SEP 12.1, administrators may stop the PGP NetShare driver:
Symantec Endpoint Protection 11.0 installations are not affected.
PGP 10.2.1 mp1