Add-ons not installing anymore
Out of the blue my add-ons are disabled (see picture of my about:addons screen) and cannot be reinstalled. Every time I try to install an add-on I get: "Installation aborted because the add-on appears to be corrupt."
Setting xpinstall.signatures.required and xpinstall.whitelist.required to false in about:config did not resolve this issue as well.
Chosen solution
You can try Firefox from the official Mozilla server if you currently use a version from the repositories of your Linux distribution to see if it behaves differently.
You can try "Clear the startup cache..." via the "Help -> More Troubleshooting Information" (about:support) page.
Read this answer in context 👍 0All Replies (5)
That is odd.
It’s possible that there is a problem with the file(s) that store the extensions registry.
Type about:support in the address box and press enter.
Under the page logo on the left side, you will see Application Basics. Under this find Profile Folder. To its right press the button Show Folder. This will open your file browser to the current Firefox profile. Now Close Firefox.
Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder
Linux: Under the page logo on the left side, you will see Application Basics. Under this find Profile Directory. To its right press the button Open Directory.
Delete all extensions* files and compatibility.ini in the Firefox profile folder to reset the extensions registry.
New files will be created when required.
After, restart Firefox.
See "Corrupt extension files"
+++++++++++++++++++++++++++ You may have to approve the updating once again.
That felt like it could have been the issue but it didn't solve the problem.
I only had a subdirectory called "extensions" and an extensions.json to delete along with compatibility.ini.
Attached is a screen shot of what I'm seeing. Re-attempting to install an add-on re-adds extensions.json but not the "extensions" directory.
Modified by alimar
Seçilmiş Həll
You can try Firefox from the official Mozilla server if you currently use a version from the repositories of your Linux distribution to see if it behaves differently.
You can try "Clear the startup cache..." via the "Help -> More Troubleshooting Information" (about:support) page.
Uninstalling firefox and removing the entire .firefox directory under $HOME and then reinstalling firefox through the repository from my Linux distribution fixed the issue for me.
I guess we won't know exactly what happened with such a scorched earth approach that resulted in my browsing history being deleted, but the issue is resolved.
Modified by alimar
That was very good work. Well Done. Please flag your last post as Solved Problem as this can help others with similar problems. Go to that post and click the 'Solved' button to its right.