I’m using Debian in its testing (9th) version.

I did a package upgrade two days ago, and since then Chromium doesn’t have any extensions installed. Flash isn’t working either (but it wasn’t working already before the upgrade).

chromium:amd64 was in version 55.0.2883.75-3 and now is in version 55.0.2883.75-6.

My ~/.config/chromium/Default/Extensions/ folder still has all of its extensions in there, but chromium doesn’t seem to want to use them.

If I try to install a new extension, I get the error, “installation is not enabled” but I can’t find any option that will let me enable extensions installation.

How do I get my extensions working again?


Non-packaged extensions have been disabled for security reasons, since version 55.0.2883.75-4 of the package. To re-enable them, you need to run Chromium with the --enable-remote-extensions option; if you want to do so permanently, you should copy /usr/share/applications/chromium.desktop to ~/.local/share/applications and add the option to the Exec line:

Exec=/usr/bin/chromium --enable-remote-extensions %U

Note that updating extensions has been (mistakenly) disabled; it's worth tracking #841401 for updates on that issue.

  • This doesn't work anymore on 70.0.3538.35. The message about not allowed installation from web site appears even after enabling switch as you suggested: /usr/lib64/chromium-browser/chrome --extra-plugin-dir=/usr/lib64/nsbrowser/plugins --enable-remote-extensions
    – kensai
    Oct 14 '18 at 6:06
  • @kensai extensions have seen quite a few changes in 70, you might need to adjust your preferences in the browser too (I haven’t checked yet). Oct 14 '18 at 8:32
  • Actually by drag&drop cr extension directly it didn't work, but by loading as unpacked it worked.
    – kensai
    Oct 16 '18 at 5:19

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