windows presentation foundation schriftart cache 3.0.0.0

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Error message or high CPU utilization when running a WPF-based application

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This article helps you resolve the problem where you receive a FileFormatException or ArgumentOutOfRangeException error message in a Windows Presentation Foundation (WPF)-based program when the WPF-based program processes text.

Applies to:   Windows Presentation Foundation Original KB number:   937135

When you run a WPF-based application in the Microsoft .NET Framework 3.0, you may receive a FileFormatException error or an ArgumentOutofRangeException error. The error occurs when the WPF-based application starts to process text. For example, you may receive a FileFormatException error message that resembles the following:

file:///filepath/file_name file does not conform to the expected file format specification.

In this error message, file_name is typically the file name for a font. Additionally, the application consumes up to 100 percent CPU time.

When looking in Task Manager or other tools, PresentationFontCache.exe consumes 50% or more of available processor time.

This issue occurs if video drivers overwrite the data in the font cache that is stored in memory.

To resolve this issue, follow these steps:

Exit all WPF-based applications that are running on the computer.

Stop the Windows Presentation Foundation Font Cache 3.0.0.0 service. To stop the Windows Presentation Foundation Font Cache 3.0.0.0 service, use one of the following methods.

Method 1: Use Microsoft Management Console

• Click Start , click Run , type Services.msc , and then click OK .
• Right-click Windows Presentation Foundation Font Cache 3.0.0.0 , and then click Stop .

Method 2: Use the command prompt

• Click Start , click Run , type cmd , and then click OK .
• At the command prompt, type net stop "Windows Presentation Foundation Font Cache 3.0.0.0" , and then press ENTER .

Delete the old Fontcache3.0.0.0.dat file.

By default, the Fontcache3.0.0.0.dat file is located in the %windir%\ServiceProfiles\LocalService\AppData\Local folder in Windows Vista. By default, the Fontcache3.0.0.0.dat file is located in the %systemdrive%\Documents and Settings\LocalService\Local Settings\Application Data folder in Windows XP and in earlier versions of Windows.

Update the video card drivers. To do this, use one of the following methods.

Method 1: Use Windows Update Catalog

To update the video card drivers, check for updates in the Windows Update Catalog. For more information about how to download drivers from the Windows Update Catalog, see How to download updates that include drivers and hotfixes from the Windows Update Catalog .

Method 2: Download and then install the latest video card drivers

To download and install the latest video card drivers, contact the computer or the video hardware manufacturer.

More information

If the video card drivers overwrite the data in the font cache that is stored in memory, the corrupted data may be saved to the hard disk as a data file. Therefore, you may experience the issue that is described in the Symptoms section when another WPF-based application tries to read the corrupted data file.

After you update the video card drivers and after you delete the Fontcache3.0.0.0.dat file, a new font cache data file is created based on the new computer configuration. This new font cache data file is created when the Windows Presentation Foundation Font Cache 3.0.0.0 service is stopped. Typically, the new font cache data file is created when the computer is shut down or restarted.

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PresentationFontCach.exe using large amount of CPU #8732

vsfeedback commented Jan 25, 2024

miloush commented Jan 25, 2024

Sorry, something went wrong.

lindexi commented Jan 26, 2024

Miloush commented jan 26, 2024.

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Windows presentation foundation font cache.

The Windows Presentation Foundation Font Cache service optimizes performance of the Windows Presentation Foundation (WPF) application by caching commonly used font data. You may have multiple versions of this service, such as Windows Presentation Foundation Font Cache 3.0.0.0 and Windows Presentation Foundation Font Cache 4.0.0.0, to support applications that are created with different versions of WPF. WPF applications will start this service if it is not already running. It can be disabled, but doing so degrades the performance of WPF applications.

This service is installed by default in Windows 7, and its startup type is Manual .

When the Windows Presentation Foundation Font Cache service is started in its default configuration, it logs on by using the Local Service account.

The Windows Presentation Foundation Font Cache service is not dependent on any other system service, nor is any service dependent on it.

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Top 3 Solutions to PresentationFontCache.exe High CPU Usage

What is PresentationFontCache.exe? Why does it take so much resources? To figure out the answer, you can read this post provided by MiniTool Partition Wizard where 3 solutions to PresentationFontCache.exe high CPU usage are listed.

About PresentationFontCache.exe and Its High CPU Usage

What is PresentationFontCache.exe? Actually, it is a software associated with the .NET Framework . The software is responsible for loading the font glyphs in the memory , which enables the Windows Presentation Foundation (WPF) applications to use theses fonts. Therefore, when you run a WPF app, the PresentationFontCache.exe will be started in order to offer font’s information for the app.

However, sometimes users may find that the PresentationFontCache.exe process is using a lot of CPU resources (up to 50% or even 100% in some cases). It slows down the computer . Although they end the process in Task Manager , it could appear again after a while or when you restart the PC. PresentationFontCache.exe high CPU might also slow down the startup.

The problem has something to do with the corrupted font in the cache. After being used for some time, the font’s information may be corrupted or unresponsive, which leads to PresentationFontCache.exe stuck in a restart loop and takes too much resources.

Don’t worry. The problem can be fixed easily. If you’re bothered by the same problem, you can try the following solutions to solve it by yourself.

Solution 1: Delete FontCache.dat

When you encounter PresentationFontCache.exe high CPU usage, it is possible that the .dat file which includes information referenced to an application is corrupted. You can try deleting the file and restarting the PC to solve the problem.

Here are the detailed steps.

Step 1 : Press Win + R to invoke Run window. Then input the following command to the box and click OK to access the Local folder quickly:  C:WindowsServiceProfilesLocalServiceAppDataLocal

Step 2 : Delete the file named FontCache3.0.0.0.dat (or Font*.dat ).

Then you can reboot your computer and check whether PresentationFontCache.exe high CPU usage has been solved. If it still appears, please move on to the next solution.

Solution 2: Disable Presentation Font Cache Service

As mentioned, PresentationFontCache.exe starts when WPF software is running. If you don’t use any WPF applications, you can stop the Presentation Font Cache service.

Step 1 : Open Run window, type services.msc , and then press Enter to access Service .

Step 2 : Scroll down to find Windows Presentation Foundation Font Cache 3.0.0.0 service. Then right-click it and select Properties .

Step 3 : In the pop-up window, select Disable for Startup type . Then click Stop , Apply and OK to disable the service and save the changes you have made.

Once it’s done, the PresentationFontCache.exe high CPU usage issue will disappear.

Solution 3: Repair .NET Framework

Another way to fix PresentationFontCache.exe high CPU usage is to repair the .NET Framework, since they are associated.

Step 1 : Press Win + S to open Search utility. Type control in the search box and select Control Panel from the search results.

Step 2 : Select View by: Category and click Uninstall a program .

Step 3 : In the list of programs and features, select Microsoft .Net Framework of your version and click Change/Remove . In the pop-up window, click Repair and follow the onscreen instructions to finish the operation.

When problems with the .NET Framework, you should restart your computer and the PresentationFontCache.exe high CPU usage should have disappeared.

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Windows Presentation Foundation Font Cache 3.0.0.0

Asked by CBA2 , May 28, 2010

I have one program only using Windows Presentation Foundation Font Cache 3.0.0.0, Canon's CameraWindow, used to download pics from my camera. Once done and after closing CameraWindow, the Windows Presentation Foundation Font Cache 3.0.0.0 service (originally set to manual start) remains running (using memory and resources) and I have to stop the service myself.

Question: is there a way to have this happen automatically once I close Canon's CameraWindow? It's a pita, albeit not a big one, but I do NOT want to have this service running for no reason. Best, CBA

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Probably not. Maybe you could create a script that launches the program, waits for it to exit, and then calls the command to stop the service. That would likely require that it runs as administrator though.

Thanks. Don't think a script would work as the CameraWindow is launched automatically once I plug my camera into the USB port/cable. I'll ask Canon's support. A (very) long shot ... but they may have a suggestion. Best, CBA

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• PresentationFontCache.exe Information

PRESENTATIONFONTCACHE.EXE Information

This is a valid program that is required to run at startup..

This program is required to run on startup in order to benefit from its functionality or so that the program will work. The following information is a brief description of what is known about this file. If you require further assistance for this file, feel free to ask about in the forums .

• Name Windows Presentation Foundation Font Cache 3.0.0.0
• Filename PresentationFontCache.exe
• Command C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
• Description Windows service that optimizes performance of Windows Presentation Foundation (WPF) applications by caching commonly used font data. WPF applications will start this service if it is not already running. It can be disabled, though doing so will degrade the performance of WPF applications.
• File Location C:\Windows\Microsoft.Net\Framework64\v3.0\WPF\PresentationFontCache.exe
• Startup Type This startup entry is installed as a Windows service.
• Service Name FontCache3.0.0.0
• Display Name Windows Presentation Foundation Font Cache 3.0.0.0
• HijackThis Category O23 Entry
• This entry has been requested 46,711 times.

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presentationfontcache.exe has stopped working error

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Thank you for using Microsoft Windows Vista Forums. 

Follow the instructions below which might help you in resolving the issue.

1.     Click on start.

2.     Type in services.msc in the start search and hit enter.

3.     In the services window, scroll down to check “Windows Presentation Foundation Font Cache 3.0.0.0” service is started.

4.     If it is not started, right click on that and select start.

5.     Check if the issue is resolved.

Follow the instructions in the link below to perform Clean boot procedure.

Step 1: Perform a clean boot

Step 2: Enable half of the services                   

Step 3: Determine whether the problem returns

Step 4: Enable half of the Startup items Step 5: Determine whether the problem returns

Step 6: Resolve the problem

Step 7: Reset the computer to start as usual

How to troubleshoot a problem by performing a clean boot in Windows Vista

http://support.microsoft.com/kb/929135

After checking the issue, put the computer back to the Normal mode.

Uninstall or update the program which is causing the issue.

Check if the issue is resolved.

Please post back and let us know if this has helped to resolve your issue.

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Windows Presentation Foundation Font Cache 3.0.0.0 - Windows 7 Service

Optimizes performance of Windows Presentation Foundation (WPF) applications by caching commonly used font data. WPF applications will start this service if it is not already running. It can be disabled, though doing so will degrade the performance of WPF applications.

This service also exists in Windows Vista .

Startup Type

Default properties, default behavior.

The Windows Presentation Foundation Font Cache 3.0.0.0 service runs as NT Authority\LocalService in its own process. It does not share the executable file with other services. If the Windows Presentation Foundation Font Cache 3.0.0.0 fails to load or initialize, the error is recorded into the Event Log. Windows 7 startup should proceed, but a message box is displayed informing you that the FontCache3.0.0.0 service has failed to start.

Restore Default Startup Type of Windows Presentation Foundation Font Cache 3.0.0.0

Automated restore.

1. Select your Windows 7 edition and Service Pack, and then click on the Download button below.

2. Save the RestoreWindowsPresentationFoundationFontCache3000Windows7.bat file to any folder on your hard drive.

3. Right-click the downloaded batch file and select Run as administrator .

4. Restart the computer to save changes.

Note. Make sure that the PresentationFontCache.exe file exists in the %WinDir%\Microsoft.Net\Framework\v3.0\WPF folder. If this file is missing you can try to restore it from your Windows 7 installation media.

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Windows Dienste: Windows Presentation Foundation-Schriftartcache 3.0.0.0

Der Dienst " FontCache3.0.0.0 " ist für die Optimierung von "Windows Presentation Foundation (WPF)"-Anwendungen zuständig. Bei den Anwendungen handelt es sich um Programme, welche die neue Funktion von Avalon oder WPF benutzen. Die Anwendungen legen die gemeinsam genutzten Schriftarten in einem öffentlichen Cache ab. Durch die neue WPF auf Basis von .NET-Framework soll die alte Win32-API ersetzt werden.

Wenn Sie noch keine WPF-Anwendungen benutzen, können Sie den Dienst deaktvieren. Bei laufenden WPF-Anwendungen kann sich dieDeaktivierung negativ auf die Performance auswirken.

Gültig für: Alle Windows Vista Versionen

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