JDK/JRE 1.8.0_131 release introduced a new restriction on how MD5 signed JAR files are verified. If the signed JAR file uses MD5, signature verification operations will ignore the signature and treat the JAR as if it were unsigned.
4. Replace the JARs with JARs provided in the hotfix 5. Make sure that the permissions and ownershp of all the newly copied files are same as the backed up files. 6. Start the Symantec Protection Engine service and access the console.