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Kudos0

high cpu

For past week every day, Norton Security has been on high CPU (20-30%) all the time.  While it is on high CPU, double-clicking the Norton Security icon does not start the application.  So I have no idea what's going on.

Is there a way to stop the high CPU running all the time?

I'm on Windows 10 Home, version 1803, OS build: 17134.765.

File Attachment: 

Replies

Kudos0

Re: high cpu

Hi jn4fulllife:

Your screenshot also shows that your Chrome browser is consuming over 500 MB of RAM.  Does the CPU consumption by Norton Security decrease noticeably when you close Chrome?  If so, please see Richard Fox 680's recent thread Chrome Issues with Norton?.

I don't know if your issues are related but it's always possible there's a problem with a recent update to a Norton browser protection feature [e.g., an Intrusion Prevention (IP) definition update] or one of the Norton browser add-ons that's causing a problem with Chrome.
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32-bit Vista Home Premium SP2 * Firefox ESR v52.9.0 * Norton Security Deluxe v22.15.2.22

Kudos0

Re: high cpu

Hi Imacri:

When I closed Chrome, there is no change to the CPU, still around 20-30%.  Actually, Norton is not an add-on on my Chrome.

-John

Kudos0

Re: high cpu

chrome://settings/

Kudos0

Re: high cpu

Hi bjm:

The setting on Chrome had "Use hardware acceleration when available" to enabled.  I disabled and relaunched Chrome.  CPU is still high.  No change.

Kudos0

Re: high cpu

Yeah, I was wondering about:
Do you run Chrome sync?

Kudos0

Re: high cpu

I do have a phone that synch up with my computer (for example, my search history).  On the Chrome on my computer, it shows that "Last time synced on Today at 10:45 PM (just now)".  So I guess I am running Chrome sync.

Kudos0

Re: high cpu

I am not sure if high CPU from the Norton Security (NS) service is related to Chrome.  I don't have NS as an add-on or extension. Also CPU for NS remains high after I closed Chrome.

Kudos0

Re: high cpu

FWIW ~ during Quick Scan.

Also CPU for NS remains high after I closed Chrome.

Kudos1 Stats

Re: high cpu

jn4fulllife:

When I closed Chrome, there is no change to the CPU, still around 20-30%.  Actually, Norton is not an add-on on my Chrome.

Hi jn4fulllife:

Open your Performance Graph (Performance | Graphs | Usage | CPU tab) and wait for a period of CPU high activity by nortonsecurity.exe - Norton-related activity should appear as yellow peaks.  Does the high activity only occur when your system is idle or does it run constantly at 20-30%, and if you click in this area of high CPU activity is there another process listed in the pop-up that always runs at the same time?  Most of the Norton background tasks like Automatic LiveUpdate, Quick Scan, Disk Optimizer (if enabled), etc. listed at Settings | Administrative Settings | Background Tasks | Configure will run during system idles so it's normal to see yellow peaks of high Norton activity when you aren't working on your computer, but it isn't normal for this high CPU activity by nortonsecurity.exe to appear outside of system idles.  For example, my recent image below shows that Norton seems to "wake up" and consume additional resources outside of system idles every time I launch my Firefox ESR browser, even though firefox.exe is a "safe" (trusted) executable.

If you go to Help | About does it show that you received the latest update to v22.17.2.46 (released 28-May-2019, see the product update announcement <here>)?  If you haven't already done so, I'd suggest that you disable the Windows Fast Startup power option described in peterweb's thread Windows 8/8.1 or 10 and Fast Start Feature and then re-boot your system a few times after this setting is disabled.  This Fast Startup feature (also called hybrid boot-up / hybrid shutdown) can interfere with product updates and loading of Norton services at boot-up and result in all sorts of odd glitches and unexpected behaviour on Win 8.x and Win 10 computers.  If you've disabled this power option in the past just confirm that it's still turned off, since Fast Startup can sometimes re-enable itself after a major Windows update like a change from Win 10 Version 1803 to 1809.

If none of that helps you might want to refresh your Norton installation using the Norton Remove and Reinstall Tool at https://www.norton.com/nrnr just in case there was a glitch during the recent v22.17.2.46 update that corrupted your Norton installation.
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32-bit Vista Home Premium SP2 * Firefox ESR v52.9.0 * Norton Security Deluxe v22.15.2.22

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