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how do i recover my add ons after a reset? no one told me to archive the prior version!

  • 7 replies
  • 2 have this problem
  • Last reply by FredMcD

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the add on that fills in forms and Pocket are GONE.

thanks for the help

the add on that fills in forms and Pocket are GONE. thanks for the help

All Replies (7)

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Refresh Firefox {web link} is a LAST RESORT ! !

Refresh Firefox - reset add-ons and settings

If you're having problems with Firefox, refreshing it can help. The refresh feature fixes many issues by restoring Firefox to its default state while saving your essential information like bookmarks, passwords, and open tabs.

Look on your desktop. Do you see a folder called; Old Firefox?

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Do you recall the name of the missing form filler? Maybe RoboForm?

What kind of reset was it, for example, a Firefox "Refresh" or a Windows "Reset"?

If you used Firefox's Refresh feature, your entire old settings folder can be found on your desktop in a folder named Old Firefox Data. It's usually best to reinstall from the source rather than copy extensions from this folder to your current "refreshed" profile folder, but that might be possible. If relevant, we'll have more suggestions about how to rescue this data.

If you used Windows' Reset feature, usually your entire old settings folder will be hidden under


If relevant, we'll have more suggestions about how to rescue this data.

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There are other things that need attention.

You can check if your plugins are up-to-date.

Current is

  • Shockwave Flash 18.0 r0

You can find the latest Flash player versions for Firefox on this page:

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it was a firefox Refresh and I found the old Firefox Data. mow what? thanks

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never mind last question i see email from FredMcD


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It's a little tricky researching missing add-ons... no idea what the name was?

If not, you can try to research it using your old settings folder, which you should find inside an Old Firefox Data folder on your desktop. When clicking through this folder, you should see:

  • a semi-randomly-named folder, often with "default" in the name
  • inside that, an extensions folder
  • inside that, various files and/or folders for your old extensions

The challenge is that extension files/folders often are named using unique id's instead of friendly descriptive names.

If none seems obviously useful, try this instead:

Return to the main level of the old settings folder and find the file extensions.json and right-click > Copy it. Then right-click > Paste in a blank area of the list. Windows should now show extensions - Copy.json. You can rename that with a .txt extension to access it more easily using a text editor.

In the file, search for any part of the extension's name and you should see information such as the following (example is Adobe Create PDF extension):

{"id":"web2pdfextension@web2pdf.adobedotcom","syncGUID":"v4hJ7nJBAhrE","location":"winreg-app-global","version":"2.0","type":"extension","internalName":null,"updateURL":null,"updateKey":null,"optionsURL":null, "optionsType":null,"aboutURL":null,"iconURL":"chrome://web2pdfextension/skin/C_AdobeLogo_48x48.png","icon64URL":"chrome://web2pdfextension/skin/C_AdobeLogo_64x64.png","defaultLocale":{"name":"Adobe Acrobat - Create PDF","description":"Converts a web page to PDF","creator":"Adobe Systems Incorporated","homepageURL":""},"visible":true,"active":true,"userDisabled":false,"appDisabled":false,"descriptor":"C:\\Program Files (x86)\\Adobe\\Acrobat 11.0\\Acrobat\\Browser\\WCFirefoxExtn","installDate":1389397098333,"updateDate":1437178060195,"applyBackgroundUpdates":1, "bootstrap":false,"size":286843,"sourceURI":null,"releaseNotesURI":null,"softDisabled":false,"foreignInstall":true, "hasBinaryComponents":false,"strictCompatibility":false,"locales":[],"targetApplications":[{"id":"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}", "minVersion":"4.0","maxVersion":"*.*"}],"targetPlatforms":[],"multiprocessCompatible":false,"signedState":0}

Note: turn on word wrap if necessary, since otherwise it's one long line.

If you skim through the parameters, hopefully you can find the full title.

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To open the History Manager, press the Alt or F10 key bring up the tool bar, and select History. Hot key is <Control>(Mac=<Command>) <Shift> H.

In the search box, enter addons.mozilla