Process WUDFHost.exe (Windows Driver Foundation) engages up to 50% of CPU when running Windows Media Player

Hi Guys,
I'd like to find out why WUDFHost.exe takes so much CPU (for about 4-5 minutes, then it gets back to normal) when playing Audio/Video files.  I run Win 8.1. PRO Update 1 on AMD Processor x 64. I've updated all drivers and additionally installed the
latest K-Lite Mega Pack to play all possible formats with WMP.

Hi,
Some drivers are running in user mode (such as usb drivers), specifically in a process running the executable image WUDFHost.exe, please make sure to insatll latest drivers, keep windows up-to-date. you can also unplug all external deivces
as a test, except mouse and keyboard.
If stll fails to find the cause, I suggest you capture a high CPU trace with WPT, then upload the trace file to OneDrive for further analysis.
WPT: WPR/Xperf: Capture high cpu, disk i/o, file, registry, networking, Private bytes, Virtual bytes, Paged Pool/Nonpaged pool and/or application slowness.
http://blogs.technet.com/b/yongrhee/archive/2012/11/23/wpr-xperf-capture-high-cpu-disk-i-o-file-registry-networking-private-bytes-virtual-bytes-paged-pool-nonpaged-pool-and-or-application-slowness.aspx
Yolanda Zhu
TechNet Community Support

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    Dan(Sun Oct 19 2008 16:04:52 GMT-0400 (Eastern Daylight Time))>
    1. Click on Start.
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    9. Now Double click on HKEY_LOCAL_MACHINE.
    10. Then click on +sign beside Software.
    11. Now delete all the folders which start with Palm.
    LiveAssist Transcript
    [Print] Print [Copy] Copy [Email] Email [Close] Close
    chat id: 7f2a7664-50e8-40fb-8933-f82278d33b6d
    Problem: Palm Deskto & Windows Media Player?
    John_Collyer > I have my palm application directory installed to V:\PalmDesktop6App and the user data files installed to V:\jcollyer-files\PalmDataV6_001 This is a removable drive that I install on my work computer. I remove this drive and take it home with me. Doing this allows me the ability to keep my palm data secure but I can still use my computer at work to manage my palm data.
    If the V:\ drive is not mounted when I run palm desktop, Palm desktop messes up the "Path" regestry key:
    [HKEY_CURRENT_USER\Software\U.S. Robotics\Pilot Desktop\Core]
    "DesktopPath"="V:\\PalmDesktop6App\\"
    "HotSyncPath"="V:\\PalmDesktop6App\\Hotsync.exe"
    "Path"="V:\\jcollyer-files\\PalmDataV6_001"
    "UserConduitFolder"="C:\\Documents and Settings\\jcollyer\\Application Data\\HotSync\\Conduits"
    "PIMVersion"="6.1.0"
    "DesktopExe"="Palm.exe"
    @=""
    "Desktop Language"="ENG"
    "INSTALLDIR"="V:\\PalmDesktop6App\\"
    "VM_Username"="John Collyer"
    Dan > Hello John_Collyer, Thank you for contacting Palm Technical Support. My name is Dan. How may I help you?
    John_Collyer > When the key gets messed up it defaults to the standard palm desktop path:
    "C:\Documents and Settings\jcollyer\My Documents\Palm OS Desktop"
    I found this out because every time Windows Media player starts it tries to start Palm Desktop or the Palm Desktop install/remove program. I get a pop up window and progress bar that says “Palm Desktop by Access”. The only way to get rid of this pop up window is to shut down windows media player. So if my V: drive is not mounted just starting windows media player corrupts the user “Path” registry settings. It just so happens our work voicemail uses media player on the computer. I am using window media player 11.
    What the heck is going on? How can I stop Windows Media Player from triggering the palm desktop application? Better yet why does it even try?
    It does this when I simply open windows media player, even without a file. Just opening the Windows Media player application by it’s self causes this behavior.
    Dan > Please let me go through the information you have provided.
    John_Collyer > Ok standing by...
    Dan > I understand that you have issue with the Palm Desktop and windows Media player getting messed up .
    Dan > Sure I will guide with the issue .
    Dan > May I know since when you are facing the issue ?
    Dan > Please let me know the Operating System you are using. Is it Windows 95/98/ME/NT/2000/XP/Vista or MAC?
    John_Collyer > I had this problem from the first install about two weeks. I use PalmDesktop 4 with my T2 for years on a removable drive never had an issue. PD6 only allows me to set the user path during installation. So I have been having issues with the reg keys getting messed up for a while. I though just creating a .reg file to fix the problems was going to be simple till I found windows media player was trying to autostart palm software???
    John_Collyer > Windows XP SP3
    John_Collyer > I am a new owner of the Palm Centro not using the T2 with PD6
    Dan > Thank you for information .
    Dan > I got the issue .
    Dan > There are more than one version of the Palm software in the computer .
    John_Collyer > No only PD6 now
    Dan > That's reason the Drivers in the Registry are messing up and causing the issue .
    Dan > Okay .
    Dan > Do you have any data in the Palm Desktop ?
    John_Collyer > Yes, when the V: drive is mounted everything works great, perfect. Windows Media player even load without a hitch. I would even deal with the .reg fix work around I made to over write the registry. I still don't understand why the application tries to load when it is installed on the V: drive if the v: drive is not present. It has to be the install/uninstall .msi file that runs the Add/Remove programs feature in widows control panel. Why does any of this change the user path?
    Dan > I will explain you .
    Dan > The reason for change of the path is with the corrupted applications and computer settings .
    John_Collyer > Sorry, Why would the .msi file run if Windows Media is started?
    Dan > .MSI file is the supporting file for Windows Media player .
    Dan > That's reason for executing of .msi file during the windows media player .
    Dan > To fix the issue we must perform clean uninstall and reinstall so that you will not have any further issue .
    Dan > Let me know if you are comfortable with the clean uninstall and reinstall if the Palm software .
    John_Collyer > I've uninstalled PD6 and reinstalled it like 12 times. If the V: drive is missing it really messes up the PD6 software. To keep me from doing this by launching PD6 from the C: drive I installed it to V:. No .exe no launchy. It works fine. What is hooking into windows media player. A .msi is a Microsoft install package, not a media file. We can do a clean install but why would running windows media player start the palm install/uninstall .msi file? I have not heard why?
    John_Collyer > All my installs have worked fine. Unless there is a deeper cleaning process you can help me with other than running the remove program, is it worth trying AGAIN?
    Dan > Did you perform clean uninstall and reinstall >
    John_Collyer > Clean = remove program, reinstall, and sync to a new user folder? Then Yes. Other options?
    Dan > No we need top perform few other steps .
    John_Collyer > Ok shall I "Remove Program"?
    Dan > No please wait .
    Dan > First please let me know if you have any data in the Palm Desktop in the computer .
    John_Collyer > Yes, but it is also going to be kept in the phone correct? It will survive if we create a new user folder right?
    Dan > Yes .
    Dan > Please let me know the user name given during the Sync .
    John_Collyer > Well then I think it is safe, I have recently hotsynced so the data should be a match?
    John_Collyer > John Collyer
    Dan > Cool .
    Dan > Thank you for information .
    Dan > In the computer open My documents -->Palm OS Desktop-->locate folder called CoolyJ .
    Dan > In the computer open My documents -->Palm OS Desktop-->locate folder called CoolyJ .
    John_Collyer > No user folder there.... It's on the V: drive V:\jcollyer-files\PalmDataV6_001\CollyeJ Yes?
    Dan > Please wait .
    Dan > Please right click on the Palm Desktop and then click on Properties .
    John_Collyer > the .exe in V:\PalmDesktop6App or the shortcut in start menu?
    John_Collyer > start menu= V:\PalmDesktop6App\Palm.exe
    Dan > You will have the Palm Desktop icon on the computer desktop .
    Dan > Okay .
    Dan > Thank you for information .
    Dan > Please take the back of the Palm Desktop data in the computer .
    John_Collyer > Destop target = V:\PalmDesktop6App\Palm.exe tpp
    John_Collyer > ??? Please take the back of the Palm Desktop data in the computer
    Dan > I mean to tell you that we must save all data of the Palm Desktop in different location .
    Dan > I will assist you .
    Dan > In the computer open V:drive-->locate Palm folder .
    Dan > Open Palm folder and check if you have folder called CoolyJ .
    John_Collyer > V:\jcollyer-files\PalmDataV6_001\CollyeJ
    John_Collyer > No CoolyJ
    Dan > Okay .
    Dan > In the computer open Vrive-->Collerfiles-->Copy Palm folder and paste on the computer desktop .
    John_Collyer > done
    Dan > Okay .
    Dan > Do not delete the Pal folder that was copied to computer desktop .
    John_Collyer > ok
    Dan > First go to Start-->Control Panel-->Add/Remove Programs. There Palm or PalmOne or Palm Desktop will be listed. Click Remove against it.
    Let me know once you are done with unistallation process.
    John_Collyer > starting
    John_Collyer > done, next
    Dan > Now in the computer open V:drive-->Collerfiles-->Rename Palm folder to Palmold .
    John_Collyer > already there
    Dan > Okay .
    Dan > Now we need to perform Registry Clean up .
    Dan > Please perform the steps provided .
    Dan > 1. Click on Start.
    2. Click on Run.
    3. Type "regedit" and click Ok.
    4. Then Registry Editor window will open.
    5. Double click on HKEY_CURRENT_USER.
    6. Then click on +sign beside Software.
    7. Now delete all the folders which start with Palm.
    8. Also delete the folder called US robotics.
    9. Now Double click on HKEY_LOCAL_MACHINE.
    10. Then click on +sign beside Software.
    11. Now delete all the folders which start with Palm.
    John_Collyer > still working
    Dan > Please take your time .
    Dan > I will be with you .
    John_Collyer > done
    Dan > Cool .
    Dan > You are pretty fast .
    Dan > Now clean uninstall of the Palm software is done .
    John_Collyer > I was already deep in the registry look at this all thats how I found the "Path"
    John_Collyer > Now we reinstall? Can I still use the V: drive for application files and user data?
    Dan > Yes .
    Dan > You can use V:drive .
    Dan > After you install the Palm software perform Sync and make sure that Sync is success .
    Dan > And you will not have sny issue with the Windows media player messing up .
    John_Collyer > Ok I will start the PD6 install now
    Dan > Please go a head .
    Dan > Thank you for all the cooperation and patience in the chat session .,
    John_Collyer > working almost done
    Dan > Awesome .
    Dan > But after installation is complete we need to restart the computer .
    Dan > We must restart the computer for necessary changes to take place .
    John_Collyer > how do I get back to you in support?
    Dan > I assure that you will not have any further issue ,
    Dan > However if you do have any further issue .
    Dan > Please login with the same user name and email address .
    John_Collyer > Palm Support can find me after that?
    Dan > Yes .
    Dan > I will have Our chat session in Our Data Base .
    John_Collyer > Ok then it is time for a restart?
    Dan > So that once you re contact us we will check with the required information and pull the chat session already we have done with .
    Dan > And proceed with the further steps .
    Dan > Please go ahead .
    John_Collyer > Till then, good bye...
    Dan > Please let me know if I can be of any further help .
    Dan > Analyst has closed chat and left the room
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    Thank you so much for replying.
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    TechNet Community Support

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    Context:  Elevated  (This is usually restricted)

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    Regards,
    DP-K
    ****Click the White thumb to say thanks****
    ****Please mark Accept As Solution if it solves your problem****
    ****I don't work for HP****
    Microsoft MVP - Windows Experience

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    I would like to thank you for posting on the HP Forums. Have a great day!
    Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
    Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
    Dunidar
    I work on behalf of HP
    Find out a bit more about me by checking out my profile!
    "Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

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