If you’re still using passwords like “ABC123” to secure your online accounts, you really need a password manager to up your security game. All rights reserved.Disclaimer: Partnerships & affiliate links help us create better content. Like this post? Got a question? Let’s chat. Once I'd completed the refresh and reinstalled the extension (the debug warning is still present) everything worked perfectly again! Woop! 🎉 Refreshing Firefox can fix many issues by restoring Firefox to its default state, while saving your essential information like bookmarks, passwords, and open tabs. If you're having problems with Firefox, a refresh can help.

But the solution is simple, it worked for them on PC and it worked for my Mac, too: Refresh Firefox.

It didn't take me long to find a user with the same issue that I was having (albeit on PC - I'm on Mac). Google search just wasn't helping, so I decided to try the 1Password Forum instead to see if there were any threads that I hadn't managed to find via Google. I didn't really want to do that as I knew the extension was working fine before. I was sent down the same uninstall/re-install rabbit hole with a few new suggestions to try the latest beta versions of the app and extension. Unfortunately, this new info didn't yield any new results. Reading manifest: Warning processing key: An unexpected property was found in the WebExtension manifest. I noticed that when debugging the extension (Menu > Add-ons > Extensions (click settings icon) > Debug Add-ons) Firefox was showing a warning: This weekend, I found myself with some free time and decided to see if I could get to the bottom of the issue.

This was a minor inconvenience but because the 1Password desktop app was still working fine and I didn't want to waste any more time trying to fix it, I let it be. When the classic uninstall/re-install advice from 1Password didn't resolve the issue and a few quick searches on Google also proved fruitless, I gave up. Clicking on the extension icon did nothing and selecting login fields on webpages no longer showed 1Password suggestions. Then, about 4 or so weeks ago the Firefox extension for 1Password just stopped working. The switch went great and everything worked well.

1Password Firefox extension not working - solved!

1password firefox extension