iTunes 9: Font text is incoherent or appears in a different language

Resolution

First, ensure that iTunes is set to display in the language of your choice. For instructions, see this article iTunes: Changing the display language. If the issue persists continue with the steps below.

Download a new copy of iTunes and install it as this may resolve this issue. After you have reinstalled iTunes, visit the iTunes Store to see if the issue is resolved. If it is not, continue with the steps below.

This issue primarily affects iTunes for Windows and is caused by outdated or damaged fonts. Removing or disabling Helvetica fonts that did not come with your computer (third party), such as those installed by software for older printers, and restarting your computer should work around the issue.

If removing or disabling third-party Helvetica fonts has no effect, try isolating the issue to all of your third-party fonts by following the steps below. If the issue is resolved by isolating all of your third-party fonts, you can return a subset of fonts back into your font directory, restart, and test until you have isolated the issue to a specific problematic font.

To isolate third-party fonts in Windows:

1. Update to the latest version of iTunes by choosing Help > Check for Updates.
2. Search your fonts folder (C:\Windows\Fonts) for third-party fonts.
3. Locate all third-party fonts by sorting the view order by Last Modified to see which fonts have been installed since your operating system was installed. All fonts installed after your operating system was installed are third-party fonts.
4. Prevent all third-party fonts from loading by moving them to a new location, such as another folder on your hard drive.
5. Restart your computer after changing the contents of the font directory.

To isolate third-party fonts on a Mac:

1. Update to the latest version of iTunes by choosing iTunes > Check for Updates.
2. Search your fonts folder (/Library/Fonts and ~/Library/Fonts) for third-party fonts.
3. Locate all third-party fonts by sorting the view order by date to see which fonts have been installed since your operating system was installed. All fonts installed after your operating system was installed are third-party fonts.
4. Prevent all third-party fonts from loading by moving them to a new location, such as another folder on your hard drive. Note: You can use the Font Book application to remove or manage your Fonts. To learn more, see Mac 101: Font Book.
   1. Open Font Book.
   2. Select the fonts or font family you want to turn off in the Font column, or select an entire collection in the collection column.
   3. From the Edit menu, choose the appropriate Disable command to disable the font family or collection.
5. Restart your Mac after changing the contents of the font directory.