Saturday, February 23, 2019

Fixing the "Ninja extensions can't be installed in Firefox" issue

Some users complained about that they couldn't install the Bookmark Ninja extensions in Firefox.

It seems that the latest Firefox update (v65) broke something. Please follow the below steps to fix the problem:
  • Uninstall Firefox (Add or Remove Programs in Windows 10)
  • Reinstall Firefox from
  • Now you will be able to add the Ninja extensions

Please contact me at if you have any questions.

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