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How does one get Firefox to install 1 Password extension?

  • 2 replies
  • 1 has this problem
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  • Last reply by cor-el

insidethebeltway
insidethebeltway
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When I download the installer, a pop-up says it cannot install because "Firefox cannot modify the needed file". What is the needed file and how can I change the file so that it will install on Firefox?

When I download the installer, a pop-up says it cannot install because "Firefox cannot modify the needed file". What is the needed file and how can I change the file so that it will install on Firefox?

All Replies (2)

finitarry
finitarry
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This page has links to user guides. Maybe one of those will help. https://agilebits.com/support

cor-el
cor-el
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  • Top 10 Contributor
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This will happen if you install an Add-on that needs to be unpacked in order to function properly. Normally Firefox installs the XPI file and modifies its name, but if an extension needs to modify a file in its file structure or otherwise only works when unpacked (e.g. a dictionary) then you can get this error if the add-on doesn't get unpacked. Extensions that need to be unpacked should have an unpack instruction in its install.rdf file: <em:unpack>true</em:unpack>

You can temporarily toggle the extensions.alwaysUnpack pref to true on the about:config page to see if that helps to install the extension.