Windows 8 and 8.1 Forums

multiple instances of explorer.exe, high cpu usage

  1. #1

    Palm Coast FLorida
    Posts : 370
    Windows 8 Pro ($39.99 upgrade)

    multiple instances of explorer.exe, high cpu usage

    Ever since I have installed windows 8.1 on one of my computers I have been having problems with multiple instances of windows explorer.exe running, some instances using around 35% of my cpu.

    Computer gets so slow sometimes that I have to go into task manager and close down all the instances of explorer.exe especially the ones using up to 35% of my cpu.

    I run clean computers, anti-virus, malware detection etc, never finds anything.

    I have one theory, I have installed a registry edit so one can copy and move files by right clicking in explorer. could this edit be causing my problems?

    any help would be appreciated.


      My System SpecsSystem Spec

  2. #2

    well, just from a troubleshooting standpoint and logic by subtracting one factor at a time, it is definitely something you installed as I just pointed out in another posting here, - Windows freshly installed out of the box does not have these kinds of symptoms and problems.. so i'm guessing it is something installed..

    time for clean boot and disable startup/services related to that program and others for troubleshooting to see what it is..
      My System SpecsSystem Spec

  3. #3

    Austin TX metro area
    Posts : 640
    Windows 7 Pro 64bit [MS blue-disk set]

    Several times a day, I have two or more explorer.EXEs running a controlled amok within my Windows 7. I miss the old File Manager! Anyway, I'm often copying or moving files from one place to another. I am careful to close any un-needed explorer sessions, lest I be smitten with the sllloooww-down curse. Brooksndun makes a great point -- see what doohickies you have REGistered into explorer [right-click menu], maybe time to clean out some things. Normally, the copy to and move to right-clicks are not a problem, too many thingies, too many open explorer sessions -- often can and will cause problems.
      My System SpecsSystem Spec

multiple instances of explorer.exe, high cpu usage
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