I am trying to update the TOC of my project, Framemaker is displaying an error. "It is using unavailable fonts". When i open FrameMaker for the first time, it shows Courier fonts as unavailable. I checked in the C drive of my laptop, all the fonts from Courier family are already copied there.
Having them on the drive isn't the same as having them installed. Assuming you are using Windows, you need to check your Fonts settings for installed fonts.
On Windows 7 (8 and 10 will be similar):
Start > Control Panel > Fonts
Windows will display a new window that shows all of the fonts that are on your system. Find the Courier fonts you want and double-click on each one. If they aren't installed, you should be given the option to install them.
If they are installed, you probably need to contact Adobe tech support. Let us know what the solution is if you do have to talk to them, because I'd like to know, too. Just in case.