PresentationFontCache.exe uses 50%+ of my CPU

Anonymous
2009-12-19T17:26:51+00:00

PresentationFontCache.exe uses 50%+ of my CPU and therefore my 64 bit Windows 7 system runs even slower than it did with Vista.  Is there a fix other than killing it every time I boot up?

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Anonymous
2011-01-07T03:03:26+00:00

Go to C:\Windows\ServiceProfiles\LocalService\AppData\Local\ ,delete all Font*.dat and reboot it.

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Anonymous
2009-12-19T22:18:06+00:00

Hi,

the service PresentationFontCache.exe is only usefull if you use WPF (Windows Presentation Foundation) applications. If not, start services.msc and disable the service.

André

"A programmer is just a tool which converts caffeine into code" CLIP- Stellvertreter http://www.winvistaside.de/

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  1. Anonymous
    2011-08-04T00:37:15+00:00

    Hi There,

    It's grabbing large CPU because it is rebuilding the cache.

    When you first install or upgrade .net no matter which parts. the .net assemblies are rebuilt.

    This process does need to complete and shouldn't be interupted. you can however negate issues with the cpu by changing the processes cpu affinity. using task manager right click the .net process that is hogging the cpu and change its affinity to below normal or lower. This essentially sets it to a background task and lets the rest of your applications have priority.

     You can also raise explorer to above normal which will make your system nice and snappy.

    Do not however raise other applications above explorer as you will have issues, with your system possibly becoming unresponsive.

    There are a number of programs that can control processes in your system automatically setting the priorities and affinity for you.

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  2. Anonymous
    2011-08-27T15:29:49+00:00

    it opens again once you've closed it mate

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  3. Anonymous
    2011-09-03T15:47:17+00:00

    Hi!  You have to be logged in as an Administrator to see the next folder.  It is there, it is just hiding from you!

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