Firefox Support Forum

I've been using Dashlane for a long while. It stopped working, so I deleted it to try to solve the problem. When I tried to re-install it, it won't work. I just keep getting an error about it being corrupted. I've restarted the computer, closed Firefox. It's the same. Dashlane tried to trouble shoot with me, but they have not solved it either. It worked on Google Chrome, but I cannot get it to work on Firefox. Firefox is my browser! I need help to get Dashlane installed and working on it.

I'm using freshly-downloaded Firefox version 102.2 on a brand new laptop (Windows 11 Pro version 21H2), and every single extension is showing a "Installation aborted because the add-on appears to be corrupt" message when I try to install. I have tried checking for updates, quitting and reopening firefox, restarting my computer, refreshing firefox, uninstalling and reinstalling firefox, as well as any and all combinations of those. I've scoured these message boards and nothing is working for me. Please help!