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How to fix font cache problems

Operating systems and certain applications use font caches to keep track of all the fonts that are installed on your device. A common issue when installing or updating those fonts is that the font cache files on your computer can become corrupted.

Typical symptoms of corrupted font cache files include:

  • The font menu does not show your font.
  • (Some) letters do not appear at all.
  • Characters appear mixed and messed up.
  • Paragraphs do not reflow properly.
  • Your font does not print, or prints wrong or garbled letters.
  • You type one letter, but a different one appears.

The best solution for this is to delete the font cache files.

Mac OS

The simple way to reset a Mac’s font cache is to use a third party font cache clearing application such as Font Finagler and follow the applications instructions.

If you are comfortable with the Mac Terminal, use the following instructions:

1

Go to Finder > Applications > Utilities > Terminal.

2

Type:  sudo atsutil databases -remove

3

Enter your own system password and hit return.

4

Type:  atsutil server -shutdown

5

Type:  atsutil server -ping

6

Now it’s very important that you restart your Mac, or the cache issue may reappear.

Windows

The font cache files for all Windows operating systems are located here:

C:\Windows\System32\FNTCACHE.DAT

Then, delete the FNTCACHE.DAT file and restart your computer.

A new FNTCACHE.DAT file will be created during the restart and your font menus will now be refreshed and updated.