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From: Bill W on 2 Aug 2010 16:57
Recently I have noticed after rebooting my computer msmpeng.exe will run using over 90% of the processor. This will continue for several minutes and I'm not able to do anything. Research shows that this is related to Defender, but I'm running MS Security Essentials and Defender is not installed on my PC. Is it related to Security Essentials and is it anything I need to be concerned about. I also ready that it could be a well disguised virus, but I ran several virus scans and they all came up clean. Thank you for your help.
From: PA Bear [MS MVP] on 2 Aug 2010 19:13
When (approx. date) did you install Microsoft Security Essentials (MSE) and
was the computer fully-patched at Windows Update at the time?

What anti-virus application was installed before you installed MSE, was your
subscription still current, and did you uninstall it before you installed
MSE?

Has a(nother) Norton or McAfee application ever been installed on the
computer?

Did a Norton or McAfee free-trial come preinstalled on the computer when you
bought it? (Doesn't matter if you never used or Activated it.)

=> Microsoft Security Essentials Support Forums <=
http://social.answers.microsoft.com/Forums/en-US/category/mse
--
~Robear Dyer (PA Bear)
MS MVP-IE, Mail, Security, Windows Client - since 2002


Bill W wrote:
> Thank you. Defender is not installed, so it's MSE. Since my initial
> post,
> I found that it also runs on my other XP computer after rebooting, but
> it's
> not as noticeable because that PC has faster, multiple processors and
> msmpeng is consuming a little more than 20%. The PC in question has a
> single, slower processor and msmpeng is consuming around 90%. Thanks
> again
> for your response. I feel better and will assume that msmpeng.exe isn't
> anything I need to be concerned about.
>
>> It is also part of MSE (one reason why MS says not to have both MSE and
>> Defender).
~~~~~~~~~~~~~
>> Recently I have noticed after rebooting my computer msmpeng.exe will run
>> using over 90% of the processor. This will continue for several minutes
>> and I'm not able to do anything. Research shows that this is related to
>> Defender, but I'm running MS Security Essentials and Defender is not
>> installed on my PC. Is it related to Security Essentials and is it
>> anything I need to be concerned about. I also ready that it could be a
>> well disguised virus, but I ran several virus scans and they all came up
>> clean. Thank you for your help.

From: Bill W on 2 Aug 2010 21:11
> When (approx. date) did you install Microsoft Security Essentials (MSE)
> and was the computer fully-patched at Windows Update at the time?

I installed it about 6 months ago and the computer was fully-patched at the
time

> What anti-virus application was installed before you installed MSE, was
> your subscription still current, and did you uninstall it before you
> installed

I was using McAfee downloaded from Comcast before I installed MSE. The
subscription was current and I used the complete uninstall instructions and
tool supplied by McAfee via Comcast before installing MSE.

> Has a(nother) Norton or McAfee application ever been installed on the
> computer?

Norton was installed, but I used the uninstall instructions and tool from
Norton via Comcast before installing McAfee. See above regarding the McAfee
uninstall before moving to MSE.

> Did a Norton or McAfee free-trial come preinstalled on the computer when
> you bought it? (Doesn't matter if you never used or Activated it.)

Norton was installed and I later upgraded it to the full version. Norton
then ran on the computer for several years before installing McAfee.

Thanks for your help


"PA Bear [MS MVP]" <PABearMVP(a)gmail.com> wrote in message
news:e0pexlpMLHA.5700(a)TK2MSFTNGP04.phx.gbl...
> When (approx. date) did you install Microsoft Security Essentials (MSE)
> and was the computer fully-patched at Windows Update at the time?
>
> What anti-virus application was installed before you installed MSE, was
> your subscription still current, and did you uninstall it before you
> installed MSE?
>
> Has a(nother) Norton or McAfee application ever been installed on the
> computer?
>
> Did a Norton or McAfee free-trial come preinstalled on the computer when
> you bought it? (Doesn't matter if you never used or Activated it.)
>
> => Microsoft Security Essentials Support Forums <=
> http://social.answers.microsoft.com/Forums/en-US/category/mse
> --
> ~Robear Dyer (PA Bear)
> MS MVP-IE, Mail, Security, Windows Client - since 2002
>
>
> Bill W wrote:
>> Thank you. Defender is not installed, so it's MSE. Since my initial
>> post,
>> I found that it also runs on my other XP computer after rebooting, but
>> it's
>> not as noticeable because that PC has faster, multiple processors and
>> msmpeng is consuming a little more than 20%. The PC in question has a
>> single, slower processor and msmpeng is consuming around 90%. Thanks
>> again
>> for your response. I feel better and will assume that msmpeng.exe isn't
>> anything I need to be concerned about.
>>
>>> It is also part of MSE (one reason why MS says not to have both MSE and
>>> Defender).
> ~~~~~~~~~~~~~
>>> Recently I have noticed after rebooting my computer msmpeng.exe will
>>> run
>>> using over 90% of the processor. This will continue for several minutes
>>> and I'm not able to do anything. Research shows that this is related to
>>> Defender, but I'm running MS Security Essentials and Defender is not
>>> installed on my PC. Is it related to Security Essentials and is it
>>> anything I need to be concerned about. I also ready that it could be a
>>> well disguised virus, but I ran several virus scans and they all came up
>>> clean. Thank you for your help.
>
From: PA Bear [MS MVP] on 3 Aug 2010 11:33
Please confirm that you run the Norton Removal Tool and the McAfee Consumer
Products Removal Tool prior to installing MSE.

If you've got further questions about MSE, please post them here:
http://social.answers.microsoft.com/Forums/en-US/category/mse



Bill W wrote:
>> When (approx. date) did you install Microsoft Security Essentials (MSE)
>> and was the computer fully-patched at Windows Update at the time?
>
> I installed it about 6 months ago and the computer was fully-patched at
> the
> time
>
>> What anti-virus application was installed before you installed MSE, was
>> your subscription still current, and did you uninstall it before you
>> installed
>
> I was using McAfee downloaded from Comcast before I installed MSE. The
> subscription was current and I used the complete uninstall instructions
> and
> tool supplied by McAfee via Comcast before installing MSE.
>
>> Has a(nother) Norton or McAfee application ever been installed on the
>> computer?
>
> Norton was installed, but I used the uninstall instructions and tool from
> Norton via Comcast before installing McAfee. See above regarding the
> McAfee
> uninstall before moving to MSE.
>
>> Did a Norton or McAfee free-trial come preinstalled on the computer when
>> you bought it? (Doesn't matter if you never used or Activated it.)
>
> Norton was installed and I later upgraded it to the full version. Norton
> then ran on the computer for several years before installing McAfee.
>
> Thanks for your help
>
>
> "PA Bear [MS MVP]" <PABearMVP(a)gmail.com> wrote in message
> news:e0pexlpMLHA.5700(a)TK2MSFTNGP04.phx.gbl...
>> When (approx. date) did you install Microsoft Security Essentials (MSE)
>> and was the computer fully-patched at Windows Update at the time?
>>
>> What anti-virus application was installed before you installed MSE, was
>> your subscription still current, and did you uninstall it before you
>> installed MSE?
>>
>> Has a(nother) Norton or McAfee application ever been installed on the
>> computer?
>>
>> Did a Norton or McAfee free-trial come preinstalled on the computer when
>> you bought it? (Doesn't matter if you never used or Activated it.)
>>
>> => Microsoft Security Essentials Support Forums <=
>> http://social.answers.microsoft.com/Forums/en-US/category/mse
>> --
>> ~Robear Dyer (PA Bear)
>> MS MVP-IE, Mail, Security, Windows Client - since 2002
>>
>>
>> Bill W wrote:
>>> Thank you. Defender is not installed, so it's MSE. Since my initial
>>> post,
>>> I found that it also runs on my other XP computer after rebooting, but
>>> it's
>>> not as noticeable because that PC has faster, multiple processors and
>>> msmpeng is consuming a little more than 20%. The PC in question has a
>>> single, slower processor and msmpeng is consuming around 90%. Thanks
>>> again
>>> for your response. I feel better and will assume that msmpeng.exe isn't
>>> anything I need to be concerned about.
>>>
>>>> It is also part of MSE (one reason why MS says not to have both MSE and
>>>> Defender).
>> ~~~~~~~~~~~~~
>>>> Recently I have noticed after rebooting my computer msmpeng.exe will
>>>> run
>>>> using over 90% of the processor. This will continue for several
>>>> minutes
>>>> and I'm not able to do anything. Research shows that this is related
>>>> to
>>>> Defender, but I'm running MS Security Essentials and Defender is not
>>>> installed on my PC. Is it related to Security Essentials and is it
>>>> anything I need to be concerned about. I also ready that it could be a
>>>> well disguised virus, but I ran several virus scans and they all came
>>>> up
>>>> clean. Thank you for your help.

From: PA Bear [MS MVP] on 3 Aug 2010 18:08
[TYPO CORRECTED]

PA Bear [MS MVP] wrote:
> Please confirm that you [RAN] the Norton Removal Tool and the McAfee
> Consumer
> Products Removal Tool prior to installing MSE...

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