Forum Discussion
ag_chantelle
1Password Team
4 years ago@IWI
1Password 4 hasn't received any development updates in a while, and stopped being supported in 2017. You can read more about support for 1Password 4 here.
You can try running an executable, like 1password.exe setup
, to see if it helps with establishing communication between 1Password and Firefox. Although I can't guarantee that it would work.
Over time more and more aspects of the software may no longer work correctly on newer operating systems. So the best thing to do would be to update to a newer version of 1Password both for compatibility and security.