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symantec gets bumped offline

Posted on 2015-02-05
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Last Modified: 2015-02-10
I have Symantec Endpoint Protection version 12.1.1101.401, RU1MP1.

On a random basis my endpoints are being bumped off of their connection to the server.  The green ball turns into the red circle with the slash.  When this happens the connectivity to the server and/or the internet is severed until Symantec is restarted.  Going to the console for services.msc and (re)starting Symantec clears the problem up.  

Why is this happening and how do I prevent this from happening?
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Question by:lordzack
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btan earned 500 total points
ID: 40593021
Can consider checking (or replacing) the symlink.xml of the affected SEP clients, compared it with stable client version. Some symptoms may be
- duplicate IDs on cloned Endpoint Protection 12.1 clients
- change location of symlink file after upgrade or update
http://www.symantec.com/business/support/index?page=content&id=TECH157585

But do consider to update to latest ver as I saw in other version on intermittent issues fixes

e.g. fixes in Endpoint Protection 12.1.3 (RU3)
Symantec Endpoint Protection clients connect and disconnect with Symantec Endpoint Protection Manager intermittently

Fix ID: 3057712

Symptom: Proxy order of usage does not process as expected.

Solution: Changes to the proxy list mean that the proxy is no longer locked until the service is restarted. The proxy is unlocked when a server changes or goes offline.
http://www.symantec.com/business/support/index?page=content&id=TECH206828

e.g. fixes in Endpoint Protection 12.1.5 (RU5)
Client does not honor proxy settings

Fix ID: 3179502

Symptom: The client is configured to use a proxy to communicate with the manager. The client intermittently bypasses the proxy and connects directly to the manager.

Solution: Modified the communication logic to properly check for proxy configuration before initiating communication.

Client fails to connect to the manager through a proxy configured with PAC script

Fix ID: 3387452

Symptom: The Symantec Endpoint Protection client cannot connect to the manager if the proxy is configured with a proxy auto-config (PAC) script.

Solution: Updated the client to use the correct Microsoft APIs to get the proxy server information before communicating with the manager.
http://www.symantec.com/business/support/index?page=content&id=TECH224706

The SylinkReplacer utility to restore comms between SEP clients and their SEPM http://www.symantec.com/business/support/index?page=content&id=TECH105211

The location for Sylink.xml in Symantec Endpoint Protection 12.1 http://www.symantec.com/business/support/index?page=content&id=TECH165055
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by:lordzack
ID: 40600649
Upgrading the version did the trick.  Thank you!
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