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Former Member
Message 1 of 7

new release of mcafee is consuming 20-30% CPU!!!


I notice that ever since I received the new release of mcafee antivirus on my acer aspire 5610 laptop that it is cunsuming a large amount of my CPU...

when I check I always see 3 of 4 of the mcafee process on the top 5 processes and together they consume from 10 to 30% of my CPU!

So much so that I now have to disable the firewall service all together!

Is there a solution? Can I re-install the previous release which worked fine up to now???

Or do I have to uninstall mcaffee and forget about it?


6 Replies
Former Member
Message 2 of 7

Re: new release of mcafee is consuming 20-30% CPU!!!

Hi aquila98,

Please provide us with some more information on this so that we could diagnose the reason for the high CPU usage,

What is the McAfee process that consumes high CPU usage ?
How old is the computer ?
Was it infected with any malware previously ?
Please verify that you don’t have any other security software installed in  control panel and in C:/program files & common files .

Kindly get back to us with the following details and we shall proceed accordingly.

Dinesh K

Message 3 of 7

Re: new release of mcafee is consuming 20-30% CPU!!!

I have the same problem. Actually, worst. The autoscan started and never completed. My computer is 2 years old, with 2.0Ghz and 2GB ram. Internal hard drive is 700 GB and external (that I did not have scanned) is 500 GB. This new version hangs, slows down my computer so much that I cannot use it! I'd like to revert to the old version which would also slow down my computer but at least I could use it while it was updating and downloading.

Former Member
Message 4 of 7

Re: new release of mcafee is consuming 20-30% CPU!!!


no. my computer was never infected and I consider it quite secure..

The proces i need to stop are those relating to the firewall 9core services and firewall)

Once those are stopped I get to use my computer as before with same response time...

If I ever tuen on the fire wall I see the speed drop and i can't even watch a wmv movie!!!

So now I operate wthout a fire wall until my subscription runs out and I get to buy some other security prodct or you get a decent fix

which allows me to get back the performance I use to enjoy before this unwanted "upgrade"

glad to see others stuggels with this performance issue!


Former Member
Message 5 of 7

Re: new release of mcafee is consuming 20-30% CPU!!!

for the record:

laptop bought a couple of years ago running windoze vista enterprise edition 32 bits fully patched...

never had any problems until latest upgrade of mcafee

I even noticed that since the upgrade ever since I to lots of work backuping files from usb drive (external hd) to one another whenever the cpu is around 100% the computer simply stops. no crash warning it simply stops just as if I pull out the batery! At first I thought it might be because of the new game I am running... but then I notice that this too started sine the firewall issue began! must be related... could it be that the firewall inspect too much trafic? more that it can handle and crash?

anyway, as I said not it is disabled (all services turned off). i have to endure less security until my subscription runs out and i can change software!

what an upgrade this is!

Former Member
Message 6 of 7

Re: new release of mcafee is consuming 20-30% CPU!!!

Hi Dinz,

Here's another case. Running XP Pro 2002 SP3 on a Dell w/2.2 GHz Celeron w/1 Gb RAM.. Every time I start Firefox, and every time I reboot, I have to wait 5-7 minutes while mfefire (and McSvhost) use 80-100% of my CPU doing god-knows-what. Process Explorer is good but not good enough to figure  this out. During this time all mouse actions are stacked. RMB on the McAfee tray icon does not get a reaction until after the wait period - or a rare interrupt during  the resource fiasco. Plus I notice there are no diagnostic facilities available so it is impossible to figure out what's going on.

The worst part is, I didn't ask for  this. It just installed itself overnight about 3 days ago and now I'm stuck with it.

If a patch doesn't come out - and I mean soon -  I'm going to remove  this stuff and go with another vendor. This is way more  than an inconvenience.

Former Member
Message 7 of 7

Re: new release of mcafee is consuming 20-30% CPU!!!



I am experiencing similiar high CPU usage of new release of McAfee Security products. I did not experience these issues before the new release which I was updated to several days ago.

Dell 8250 P4 3.05GHz

1.5 MB RAM

MS Windows XP Home v.5.1.2600 SP3 build 2600

IE8.0.6001.18702, InPrivate Filtering: on, Smart Screen Filter: on,  PopUp Blocker: on

No other active screening programs besides the above. No Addon Toolbars.

McAfee Security Center v.10.0, Build 10.0.580, Last update 4.27.10

McAfee Virus scan v.14.0, Build 14.0.309, last update 4.27.10, DAT 5965, Engine 5400.1158

McAfeePersonal Firewall v.11.0, Build 11.0.378, Last update 4.22.10

No virus/malware issues reported on any scan by McAfee/SpyBot S&D(no TeaTimer)/MalwareBytes(Free version). DATs are up to date at time of posting...recent scan reveals no problems, Virtual Technician found no problems. I did not experience any problems with the DAT 5958 issue. My computer loads slowly at near full CPU usage and then backs off to almost constant flucuation between 15 to 60% every few seconds. The primary programs (via Task Manager) are McSvHost.exe which varies from15-30% + mfeFire.exe which varies from 5-30%

I had no issues before the new release, but these 2 programs(mfeFire & McSvHost) are definitely way too active.

Can this issue be looked at by the Techs please? Thank you, Kavu

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