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A bug in FontBook causes the app to incorrectly show an installation failure pop-up window when multiple font files are selected. This issue wasn't observed on previous macOSes.
The install failure notice is followed by this message:
"Some unsigned or inactive fonts were found. Make sure if duplicates from the same filename are already present."
Mac mini, macOS 10.15
I've tried installing the fonts several times with no luck. I don't opt restoring back to defaults.
Bear in mind that the bug is not present on previous MacOSes.
I was prompted to check if the files do not contain the same file name.
Most importantly the font files must be valid.
The glitch usually occurs if multiple files and folders are selected.
I've tried installing the fonts several times with no luck. I don't opt restoring back to defaults.
Bear in mind that the bug is not present on previous MacOSes.
I was prompted to check if the files do not contain the same file name.
Most importantly the font files must be valid.
The glitch usually occurs if multiple files and folders are selected.
Hey there!
Did you happen to restore the Fonts to defaults and try again?:
In the Font Book app 
on your Mac, choose File > Restore Standard Fonts.
https://support.apple.com/guide/font-book/restore-fonts-that-came-with-your-mac-fb34862/mac
I’m not sure if this is now expected to be, but if not I’d give that a try if you haven’t yet. Cheers.
Hey again! Thanks for the info.
I know you don’t want to restore fonts to defaults, and this didn’t happen in a previous OS, perhaps this is a new OS bug, I’ve seen them before. Can you say the results of validating the fonts and/or replacing duplicate fonts?:
https://support.apple.com/guide/font-book/install-and-validate-fonts-fntbk1000/mac
dragontorc wrote:
Thanks for the link but I haven't found the FontBook app in the products list to submit a bug report
Font Book is an integral part of whatever version MacOS you are using, so that is where you post the report.
True but I can't figure how to file a bug report.
Here's a screenshot of the error message:
Kindly hope Apple implements a fix in a future beta of macOS 11.2.
Thanks for the link but I haven't found the FontBook app in the products list to submit a bug report
Bug causing FontBook to incorrectly display an installation failure error pop-up when multiple font files are selected
