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How can I find out which of my add-ons will not work with Firefox 57?

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  • Last reply by MartinT

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I have 16 add-ons. None of them are flagged 'Legacy'. 6 of them are flagged "Not compatible with multiprocess" On clicking "more", only 2 of them say whether they will still work in November.

I would like to know in advance which will stop working, rather than have lots of them all fail at once.

I have 16 add-ons. None of them are flagged 'Legacy'. 6 of them are flagged "Not compatible with multiprocess" On clicking "more", only 2 of them say whether they will still work in November. I would like to know in advance which will stop working, rather than have lots of them all fail at once.

All Replies (5)

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List your extensions here, you didn't submit your troubleshooting data when you submitted your thread.

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Firefox 54 might not have started using the Legacy label; I can't remember. It's definitely there in Firefox 55.

If you want to start the research yourself, the Add-ons site has "compatible with Firefox 57" labels on those extensions which will be able to run in Firefox 57+.

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"Not compatible with multiprocess" only means that Firefox shuts down multiprocess.

You can also go to that add-ons web page and see if there are any warnings or complaints.

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Firefox 54 doesn't show the yellow Legacy label on extensions that aren't WebExtensions. Only WebExtensions will work with Firefox 57+ and are tagged as firefox57

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These are the extensions I have:

Adblock Plus Add-on Compatibility Reporter Not running on Firefox 57 DownThemAll! Edit Bookmark Plus Evernote Web Clipper F.B Purity - Cleans up Facebook (WX) Form History Control Google Image Search S3.Google Translator Session Exporter Unlikely to be modified in time for version 57 SQLite Manager Tab Groups "will stop working by next November" Tab Mix Plus Total bookmarks Ubuntu Modifications Video DownloadHelper

There are only 3 which state on their web page that they will not work on version 57.