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  1. #91
    JLS is offline Virtual PC Specialist!!!
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    The processes that was running @ 90%+ was called "antimalware service executable."

  2. #92
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    Antimalware Service Executable is MsMpEng.exe. If you click on the Details tab in Task Manager, you should see MsMpEng.exe listed.

    You could try Method 6: Removing Bad Updates
    https://appuals.com/how-to-fix-high-...table-msmpeng/

    Do you have an HD or an SSD? What kind of CPU do you have? A full scan will definitely take longer on an HD.

    If you really want to do full scans, maybe you can schedule them to run at night or just kick it off before you go to sleep. (Method 2 in the link above)

  3. #93
    JLS is offline Virtual PC Specialist!!!
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    I have a SSD and my CPU is Intel core i5-7200u. I did method 6 and my CPU still went to 100%. Is the default setting on when Defender runs a scan is when I run it manually? My CPU will still run at 100%, even if I schedule a time for it to run. Isn't that hard on the CPU over time?

  4. #94
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    There's another method to delete the old WD database files:
    https://www.tenforums.com/performanc...efender-7.html

    Deleting the database files worked for me but there is an easier way:

    1) Use group policy editor to Turn off Windows Defender (there are many links which show how to do this)
    2) Open a powershell as Admin (right click start menu to see this option quickly)
    3) Go to the C:\ProgramData\Microsoft\Windows Defender\Scans directory
    4) Delete the mpengine* and mpcache* files
    5) re-enable via Group policy editor - those file will be recreated but it seems to solve the problem
    Instead of group policy, you could try using Defender Control to turn off/on Windows Defender:
    https://www.sordum.org/9480/

  5. #95
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    Here's what I did using Defender Control:

    DISABLE Windows Defender with Defender Control

    Right-click on the Start button
    Click Windows PowerShell (Admin)
    Click "Yes" when prompted by User Account Control

    Use the following commands to delete the Windows Defender definition files:
    cd "C:\ProgramData\Microsoft\Windows Defender\Scans"
    del mpenginedb*
    del mpcache*
    exit

    ENABLE Windows Defender with Defender Control
    Click "Open Security Center" in Defender Control

    (Windows Security window will open)

    Click Virus & threat protection
    Click Virus & threat protection updates > Check for updates
    Click "Check for updates"

  6. #96
    JLS is offline Virtual PC Specialist!!!
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    I downloaded and installed Defender Control. I disabled it (turned off), then followed your steps in Powershell as admin, exited out of Powershell, enabled Defender using Defender Control, opened virus and threat protection, checked for updates which was already up to date. I tried doing a full scan again and CPU was still 100% with Antimalware Service Executable was ~94%.

  7. #97
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    Well, that's about all of the fixes I could find. Maybe it's related to whatever remnants of Avast are left.

    Again, I think you should get your system checked out in the ICU.

  8. #98
    JLS is offline Virtual PC Specialist!!!
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    Midknyte, if I do post on ICU, what should I state is my issue? CPU overheating issues when running Defender or something related to Avast issues?

  9. #99
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    I mentioned that in post #78.

    At this point, you should probably create a new thread in the ICU. Maybe Broni will see something that needs to be cleaned out.

    http://discussions.virtualdr.com/sho...ted-3-21-2015)

    The original problem was Segurazo, but now you can't fully uninstall Avast in order to install BitDefender. Maybe he'll have a better suggestion for AV also.

    If all else fails, you still have Windows Defender.
    Basically, you need to check if everything is clean first.

  10. #100
    JLS is offline Virtual PC Specialist!!!
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    Ok, Midknyte. Again, I can't thank you enough for all the help you give me. I really apprecaite it.

  11. #101
    JLS is offline Virtual PC Specialist!!!
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    Just an update. Last night windows did an update on my laptop before it booted down. This morning when I booted my laptop into windows, it completed the windows updates. After windows finished updating and it booted back into windows, I received a Avast popup window appeared. I opened Task manager and there were 4 Avast processes listed. I looked further and saw that Avast Free Antivirus is installed on my laptop again. I don't know how it got installed on my laptop again. I want to try again in uninstalling it and maybe it will uninstall correctly this time. Last time I used Revo uninstaller. What steps should I take to uninstall Avast free AV to see if it uninstalls completely this time?

  12. #102
    JLS is offline Virtual PC Specialist!!!
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    Also, there are 2 processes listed in task manager titled the same (Avast Antivirus). Why would there be 2 with exactly the same name?

  13. #103
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    That could have been causing issues with Windows Defender also.

    You can use the Avastclear tool: https://www.avast.com/uninstall-utility

    Or you can try geekuninstaller as I mentioned in post#8
    https://geekuninstaller.com/download

  14. #104
    JLS is offline Virtual PC Specialist!!!
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    I am attempting to uninstall Avast using geekuninstaller. The screen currently says at top "uninstalling the product" and below that it says "calling named action: AcsRemoveWfpFilters. It has been at this screen for the last past 10 minutes.

  15. #105
    JLS is offline Virtual PC Specialist!!!
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    It was stuck at that screen and I couldn't even close it out. I rebooted and tried uninstalling Avast AV again using geekuninstaller and it uninstalled this time.

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