How to Clear the WPF Font Cache

PROBLEM

You may experience an issue with the Test Studio user interface. A corrupt WPF font cache may cause the drop-down menus to not expand and their values unable to be selected.

 

SOLTUION

Clear the WPF font cache.

1. Start > Control Panel > Administrative Tools > Services (or type "services.msc" from the run command box).
2. Stop the "Windows Presentation Foundation Font Cache 3.0.0.0" service.
3. Delete the cache file: "FontCache3.0.0.0.dat".
   • WinXP: "C:\Documents and Settings\LocalService\Local Settings\Application Data"
   • Vista/Win7: "C:\Windows\ServiceProfiles\LocalService\AppData\Local"
4. Restart the service or the machine if needed.

 

Please see these threads for more information:

• http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/7cc032c1-5f4d-4518-adc6-f53afd051e6b
• http://social.msdn.microsoft.com/Forums/en/wpf/thread/aa7b8449-fd93-4f91-a602-26ce1b73dc85