Suddenly folders load very slowly (blank) green progress bar loads.

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  1. Layback Bear
    Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       New #11

    Thank you Arc for your help.
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  3. A Guy
    Posts : 53,365
    Windows 10 Home x64
       New #12

    You might want to open Resource Monitor after startup, with all 4 sections expanded. See if there is high CPU, Memory, HDD, or Network usage, and if there is a program using high resources.

    Start> In search box type resource monitor> Enter



    A Guy
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  4. vmp01
    Posts : 6
    Windows 7 Ultimate 64 bit
    Thread Starter
       New #13

    Dear members thanks again for your valuable feedback.

    I think I have found the troublemaker!
    It's the process named 'dllhost.exe' com surrogate.

    Disabling it solves the problem.
    It's not always visible in the task manager.

    Every time I open the Aero theme menu it shows up for some random period and then disappears.
    Just some minutes ago it was using more than 20% system memory.

    Everytime I open a folder with thumbnails the memory usage number keeps on counting behind the process in the task manager.
    Disabling it brings back the thumbnails in all the folders.

    Did a search for 'dllhost.exe' and found many people with similar problems and solutions.

    View [SOLVED] Blank icons/white thumbnails + slow My Computer + COM Surrogate crashes'

    https://www.google.nl/#q=disable+dllhost

    It must be some kind of codec related service that jumps in when visual elements are loaded.
    I am reading through the solutions right now.
    Last edited by vmp01; 21 Oct 2013 at 13:43.
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  6. vmp01
    Posts : 6
    Windows 7 Ultimate 64 bit
    Thread Starter
       New #14

    I think I have found the problem and the solution!

    'dllhost.exe' is a thumbnail generator of windows.

    On my desktop there was a broken video file.
    So just after windows logs on and sees the video file on the desktop the 'dllhost.exe' tries to create a thumbnail of it, but can't so it starts eating all the memory and keeps eating it more and more.

    Hence the reason why the system becomes slower and almost halts after some seconds.
    And because the 'dllhost.exe' was so busy with that one corrupt video file it couldn't make any other thumbnails like in the folder or the aero theme template icons!

    Solution: remove the corrupt video.

    I have gone through the different files and finally isolated the video file by putting it in a folder. Turning on the thumbnail view then checking the dllhost memory usage.
    By disabling and enabling the 'dllhost.exe' in the taskbar I could reset it to check each file.

    Now everything is fine.
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  7. Arc
    Posts : 35,373
    Microsoft Windows 10 Pro Insider Preview 64-bit
       New #15

    Its good for you that are able to identify the file for which thumbnail generation was becoming the problem. :)

    Well done.
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  8. DavidE
    Posts : 6,330
    Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64 +Linux_VMs +Chromium_VM
       New #16

    Glad you found the problem and fixed it!
    I did mention in post #3 a corrupt video file as a possibility.
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  10. vmp01
    Posts : 6
    Windows 7 Ultimate 64 bit
    Thread Starter
       New #17

    Thanks Arc.

    Indeed DavidW7ncus! Thanks
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  11. A Guy
    Posts : 53,365
    Windows 10 Home x64
       New #18

    Glad you got it sorted. Indeed we have seen this before, with corrupt images as well.

    A Guy
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