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Forum Discussion
Firefox add-on failed to install - cannot modify the needed file
When I try to install the Firefox 1Password add-on on a Mac I get the error: "about:addons 1Password - Password Manager could not be installed because Firefox cannot modify the needed file."
I al...
1P_Tommy
Moderator
Moderator@keithhag
Sounds great and thank you for letting us know. You mentioned 12.5 in your introduction. I would recommend considering an update of macOS to 12.6.3, at your convenience.
