Having problems installing Symantec Endpoint patches? Symantec Endpoint definition patches come in a form of files with the .jdb extension. When using Symantec’s live update feature which will not install those Endpoint updates successfully, then you can try to install them manually.
You can view some instructions that will quickly show you how to manually install those definition patches. In the Symantec Endpoint console, verify that LiveUpdate is configured to download the security patches to your management server. In the “Content Types to Download” dialog box, make sure that “Client” security patches is checked.
You can run a report to find out which release is installed on your client computers. You would run a “Protection Content Versions” report. Verify that the LiveUpdate “Settings” policy is configured to download the patches to your Symantec Endpoint clients.
In the LiveUpdate “Settings” policy, under “Windows Settings”, click on “Advanced Settings”. Make sure that “Download” security patches to fix any vulnerabilities” in the latest version of the Symantec Endpoint Protection client is checked.
When notified by Symantec Endpoint, you will need to restart your client computers.