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I changed my computer time temporarily to 2015 then my firefox addons are now "legacy" although they are working perfectly fine before

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So this is what happened: 1. I changed my date to December 2015 (to try and troubleshoot a crashing program) 2. Gave up and tried to search for other answers 3. Noticed that my addons are missing and are now "Legacy" 4. Fixed the date to the current date and restarted firefox 5. Addons still Legacy

Steps tried to fix issue 1. Update addons (nope) 2. Tweak about:config?filter=extensions.legacy to try and allow legacy (nope) 3. Ask the community (Ongoing)

Any ideas?

So this is what happened: 1. I changed my date to December 2015 (to try and troubleshoot a crashing program) 2. Gave up and tried to search for other answers 3. Noticed that my addons are missing and are now "Legacy" 4. Fixed the date to the current date and restarted firefox 5. Addons still Legacy Steps tried to fix issue 1. Update addons (nope) 2. Tweak about:config?filter=extensions.legacy to try and allow legacy (nope) 3. Ask the community (Ongoing) Any ideas?

Valgt løsning

Try to delete the extensions.* files (extensions.json, extensions.ini, extensions.sqlite) and compatibility.ini in the Firefox profile folder with Firefox closed to reset the extensions registry.

New files will be created when required.

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

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Yderligere systemdetaljer

Installerede plugins

  • Shockwave Flash 31.0 r0

Program

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:63.0) Gecko/20100101 Firefox/63.0

Yderligere information

Luk
jscher2000
  • Top 10 Contributor
8875 løsninger 72620 svar

Hi Barkbark, Firefox considers an extension to be a Legacy extension if it uses older interfaces instead of the "WebExtensions" API. It shouldn't matter what the date is on your computer; Legacy extensions don't run In Firefox 57+.

Do you think newer extensions are being mislabeled? Do you want to share your extensions list? You can copy/paste it from the Troubleshooting Information page. Either:

  • "3-bar" menu button > "?" Help > Troubleshooting Information
  • (menu bar) Help > Troubleshooting Information
  • type or paste about:support in the address bar and press Enter

Scroll down past "Application Basics" and "Firefox Features" to "Extensions". Then you can select and copy the table that follows (not the entire page, please, that's too much information) using either Ctrl+c or right-click > Copy and then paste it into a reply. It will be messy, but we're used it.

Hi Barkbark, Firefox considers an extension to be a Legacy extension if it uses older interfaces instead of the "WebExtensions" API. It shouldn't matter what the date is on your computer; Legacy extensions don't run In Firefox 57+. Do you think newer extensions are being mislabeled? Do you want to share your extensions list? You can copy/paste it from the Troubleshooting Information page. Either: * "3-bar" menu button > "?" Help > Troubleshooting Information * (menu bar) Help > Troubleshooting Information * type or paste '''about:support''' in the address bar and press Enter Scroll down past "Application Basics" and "Firefox Features" to "Extensions". Then you can select and copy the table that follows (not the entire page, please, that's too much information) using either Ctrl+c or right-click > Copy and then paste it into a reply. It will be messy, but we're used it.
cor-el
  • Top 10 Contributor
  • Moderator
17763 løsninger 160635 svar

Valgt løsning

Try to delete the extensions.* files (extensions.json, extensions.ini, extensions.sqlite) and compatibility.ini in the Firefox profile folder with Firefox closed to reset the extensions registry.

New files will be created when required.

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

Try to delete the extensions.* files (extensions.json, extensions.ini, extensions.sqlite) and compatibility.ini in the Firefox profile folder with Firefox closed to reset the extensions registry. *https://support.mozilla.org/en-US/kb/Profiles New files will be created when required. You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the <b>about:profiles</b> page. *Help -> Troubleshooting Information -> Profile Directory:<br>Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder *http://kb.mozillazine.org/Profile_folder_-_Firefox