What is WPFFontCache_v0400.exe?

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the WPFFontCache_v0400.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

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WPFFontCache_v0400.exe file information

Windows Task Manager with WPFFontCache_v0400
WPFFontCache_v0400.exe process in Windows Task Manager

The process known as Windows Presentation Foundation Font Cache (version belongs to software Microsoft .NET Framework (version 4 Client Profile, 4 Client, 4) or Windows Presentation Foundation Font Cache by Microsoft (

Description: WPFFontCache_v0400.exe is not essential for Windows and will often cause problems. The file WPFFontCache_v0400.exe is located in a subfolder of C:\Windows. Known file sizes on Windows 8/7/XP are 753,504 bytes (53% of all occurrences), 754,856 bytes and 7 more variants. 
The program has no visible window. The WPFFontCache_v0400.exe file is certified by a trustworthy company. The WPFFontCache_v0400.exe file is not a Windows core file. Therefore the technical security rating is 28% dangerous, however you should also read the user reviews.
You could uninstall the associated program (Start > Control Panel > Add/Remove programs > Microsoft .NET Framework 4 Client Profile or Microsoft .NET Framework 4).

Recommended: Identify WPFFontCache_v0400.exe related errors

Important: Some malware camouflages itself as WPFFontCache_v0400.exe. Therefore, you should check the WPFFontCache_v0400.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

Die datei fiel mir auf durch einen extrem hohen Leistungsverbrauch.Sie öffnet sich (im Task Manager sichtbar) beim Einschalten nur wenn Internet Anschluss vorhanden, sodass ich annehme, sie wird vom Internet eingespielt. Sie lässt sich im task manager löschen, muss aber 3mal gelöscht werden. -- Wozu benutzt Windows denn diese Datei ? MIt dem Windows Suchprogramm ist sie nicht auffindbar.
Bei aktivem Progr. belegt es 50% Speicher. Schaltet man es aus über den Taskmanger ist der Speicher wieder 100%. Der Rechner verliert an Rechengeschwindigkeit und das extrem. Desweiteren sendet das Programm stetig keine Datenmengen. Es kann sich nur um Datenspionage handeln.

Summary: Average user rating of WPFFontCache_v0400.exe: based on 2 votes with 2 user comments. 2 users think WPFFontCache_v0400.exe is dangerous and recommend removing it.

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Best practices for resolving WPFFontCache_v0400 issues

A clean and tidy computer is the key requirement for avoiding problems with WPFFontCache_v0400. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off doing a repair of your installation, or in the case of Windows 8, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the WPFFontCache_v0400.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

WPFFontCache_v0400.exe [all]