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Font cannot be deleted because it's in use | The requested file .TTF is not a valid font file

A font may show in Control Panel - Fonts and not allow removal giving one of the following errors:
1. Font is "in use" by an application and cannot be deleted.
2. The requested file <fontname>.TTF is not a valid font file.
Additionally, if different versions of the same type font are installed either manually or by an installer, the font may not show up in Control Panel - Fonts or work properly in an application.

Operating System: Windows

06-10-14     2256 day(s) ago    

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Brant

Best Answer

A batch file exists to automate the process of removing damaged fonts that match the pattern of IDAutomation*_*.* which is safe to run since damaged fonts usually contain an underscore and IDAutomation does not produce fonts that contain an underscore. To resolve this issue with the batch file, extract the file from
http://downloads.idautomation.com/MoveDamagedFontFilestoTEMP.zip
and run it from an elevated command prompt.

To resolve the issue manually, perform the steps below. In this example, the font having the issue begins with "IDAU".

(1)
Reboot and ensure no applications are running including Control Panel.

(2)
Login to Windows with administrator privileges and open an elevated command prompt by choosing the "Run as Administrator" option.

(3)
Type CD backslash Windows backslash Fonts so you are in the Windows Fonts folder.
image

(4)
Type DIR IDAU*.* to list all the fonts of this type in the folder. Multiple versions of the same font may cause a conflict and unpredictable results in applications that make use of the font.
image

(5)
Type DEL IDAU*.* to delete the font(s).
NOTE: If you receive the "Access is Denied" error, do the following:
At the command prompt type
takeown /f IDAU*.*
and you should receive a message stating that the ownership of the file has changed; this grants delete rights to the file. If you receive a different error message, ensure you are running in an elevated command prompt, all applications are closed and that you are logged in as an administrator. Type DEL IDAU*.* again to delete the font(s).

(6)
Reinstall the fonts either manually or by the installer package.

(7)
The fonts should now operate properly and show normally in Control Panel.

Posted 2256 day(s) ago

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