Hello,
Thank you for posting in Q&A forum.
I suggest you follow the steps below to remove the font:
Open Regedit.exe and go to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts
In the right pane, delete the Roboto Black font entry.
Restart Windows.
This uninstalls the font from the system. You should be able to delete the corresponding TTF from the Fonts folder.
Note If you modify the registry incorrectly, you can cause serious problems. Therefore, follow these steps carefully. For additional protection, back up the registry before you modify it. For more information about how to back up and restore the registry, see How to back up and restore the registry in Windows.
Or you can also refer to the following link to delete the font file:
https://www.thewindowsclub.com/cannot-delete-font-files-in-windows-11-10-fixed
I hope the information above is helpful.
Best regards
Zunhui
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