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Compalint from "System is processing slow"

Created: 26 May 2013 • Updated: 26 May 2013 | 6 comments

Dear Sir,

I had upgraded the symantec endpoint to new version and deployed on all pc simultenusly. Now some of the users starts complaining that they are not able work with same pace as they were doing earlier. The new version has came up with Insight Scanning Technology, please suggest the difference between Advance vs Basic protection during :Remote Push" deployment in System Endpoint Management Console.

Hoping the positive response.


Abhishek Sharma

Operating Systems:

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ᗺrian's picture

What's the exact Sep version and what OS are the clients on?

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technical_specialist's picture
How the Insight Lookup process works
Article:TECH169282  |  Created: 2011-09-09  |  Updated: 2012-06-28  |  Article URL
Symantec Endpoint Protection Client configuration changes for performance optimization
Article:TECH102711  |  Created: 2007-01-23  |  Updated: 2010-01-30  |  Article URL
W007's picture


Can you provide SEPM version ?

If you are upgrade SEP 12.1 RU2 MP1 and problem occured on (Windows XP /Server 2003) OS.

It's Known issue with SEP 12.1 RU2 MP1. The issue would be resolved in the upcoming new release SEP 12.1 RU3.

Network performance slows on Windows XP with Symantec Endpoint Protection 12.1 Release Update 2 Maintenance Pack 1 installed

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Chetan Savade's picture


Could you please confirm what was the upgrade path? You should test the new version prior to make changes in production environment.

Need to check when end user face the slowness, is it time specific etc...

Basic Protection for Servers
Includes Virus and Spyware Protection and Download Protection. Appropriate for any servers that require maximum network performance.
Full Protection for Clients
Includes all protection technologies. Appropriate for laptops, workstations, and desktops. Includes the full download protection and mail protocol protection.
Whenever possible, use Full Protection for maximum security.
Reference: Which features should you install on the client?

Chetan Savade
Sr.Technical Support Engineer, Endpoint Security
Enterprise Technical Support

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Mithun Sanghavi's picture


I am assuming you are running Symantec Endpoint Protection 12.1.

Download Insight has the following dependencies:

  • Auto-Protect must be enabled

    If you disable Auto-Protect, Download Insight cannot function even if Download Insight is enabled.

  • Insight lookups must be enabled

    Symantec recommends that you keep the Insight lookups option enabled. If you disable the option, you disable Download Insight completely.

NOTE: If basic Download Protection is not installed, Download Insight runs on the client at level 1. Any level that you set in the policy is not applied. The user also cannot adjust the sensitivity level.

Even if you disable Download Insight, the Automatically trust any file downloaded from an intranet website option continues to function for Insight Lookup.

Insight lookups

Insight Lookup uses the latest definitions from the cloud and the Insight reputation database to make decisions about files. If you disable Insight lookups, Insight Lookup uses the latest definitions only to make decisions about files.

Insight Lookup also uses the Automatically trust any file downloaded from an intranet website option.

Insight Lookup does not run on right-click scans of folders or drives on your client computers. However, Insight Lookup runs on right-click scans of selected files.

NOTE: Insight Lookup uses the configured Insight Lookup slider level value to evaluate the files that were downloaded from a supported portal. If the files were not downloaded from a supported portal, then Insight Lookup detects them only if they have the worst reputation (similar to level 1).

Check these Articles:

Which features should you install on the client?

Symantec Endpoint Protection client features

How Symantec Endpoint Protection policy features work together

Hope that helps!!

Mithun Sanghavi
Associate Security Architect


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