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My firefox sync data disappeared


I'm using Firefox 20.0.1 on a windows 8 64bit laptop. The Reply button in outlook wasn't working for me so I reset firefox by going to Help>Troubleshooting Information>Reset Firefox That completed then I set up my preferences and logged into my sync account but now it will not sync my plugins or anything. I have it set up to do so and it only says I'm using 2.6mb of quota. I was using more than that though before I reset firefox. I have it set to merge my data, and I have it set to sync everything, but that's the thing.. my sync data is missing stuff. I think an error happened or something. Because I should have my plugins and everything back, but they aren't there. I've also tried closing firefox and reopening it and still no plugins. Also I was using more quota but it seems a lot of information from my sync account is missing. How do I get them to revert my sync information to an earlier time? Because currently it is not syncing my plugins, it thinks that I never had any installed.. I used to be able to go to Tools>add-ons>Extensions and there used to be stuff there but ever since I reset firefox that stuff is not coming back.. even though I have logged into my sync account, told it to merge everything, gave it plenty of time to do so, restarted firefox, etc. So I think my sync data didn't transfer correctly or is messed up and I need them to revert it on their end.

So I need to have someone for firefox revert my sync data to an earlier time before things were messed up...

Additional System Details

Installed Plug-ins

  • VLC media player Web Plugin 2.0.6
  • Shockwave Flash 11.7 r700
  • Next Generation Java Plug-in 10.21.2 for Mozilla browsers
  • Adobe PDF Plug-In For Firefox and Netscape 11.0.02
  • 5.1.20125.0
  • Yahoo Application State Plugin version
  • The plug-in allows you to open and edit files using Microsoft Office applications


  • Firefox 20.0.1
  • User Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:20.0) Gecko/20100101 Firefox/20.0
  • Support URL: http://support.mozilla.org/1/firefox/20.0.1/WINNT/en-US/


  • Troubleshooter 1.1a (troubleshooter@mozilla.org)


  • incrementalGCEnabled: True


  • adapterDescription: AMD Radeon HD 7520G
  • adapterDescription2:
  • adapterDeviceID: 0x9990
  • adapterDeviceID2:
  • adapterDrivers: aticfx64 aticfx64 aticfx64 aticfx32 aticfx32 aticfx32 atiumd64 atidxx64 atidxx64 atiumdag atidxx32 atidxx32 atiumdva atiumd6a atitmm64
  • adapterDrivers2:
  • adapterRAM: 512
  • adapterRAM2:
  • adapterVendorID: 0x1002
  • adapterVendorID2:
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 6.2.9200.16433
  • driverDate: 9-27-2012
  • driverDate2:
  • driverVersion:
  • driverVersion2:
  • info: {u'AzureCanvasBackend': u'direct2d', u'AzureFallbackCanvasBackend': u'cairo', u'AzureContentBackend': u'direct2d'}
  • isGPU2Active: False
  • numAcceleratedWindows: 2
  • numTotalWindows: 2
  • webglRenderer: Google Inc. -- ANGLE (AMD Radeon HD 7520G)
  • windowLayerManagerType: Direct3D 10

Modified Preferences

  • accessibility.typeaheadfind.flashBar: 0
  • browser.cache.disk.capacity: 358400
  • browser.cache.disk.smart_size.first_run: False
  • browser.cache.disk.smart_size.use_old_max: False
  • browser.cache.disk.smart_size_cached_value: 358400
  • browser.places.smartBookmarksVersion: 4
  • browser.startup.homepage: http://www.msn.com/
  • browser.startup.homepage_override.buildID: 20130409194949
  • browser.startup.homepage_override.mstone: 20.0.1
  • dom.mozApps.used: True
  • dom.w3c_touch_events.expose: False
  • extensions.lastAppVersion: 20.0.1
  • gfx.direct3d.prefer_10_1: True
  • network.cookie.prefsMigrated: True
  • places.history.expiration.transient_current_max_pages: 104858
  • plugin.disable_full_page_plugin_for_types: application/pdf
  • privacy.donottrackheader.enabled: True
  • privacy.sanitize.migrateFx3Prefs: True


  • User JS: No
  • Accessibility: No

Question owner

I used the first link you provided, it helped A LOT! Everything is back to normal. All my addons, plugins, bookmarks, history, favorites, etc. are all here as if I never messed anything up! I want to not only thank you for solving the issue but also for being so prompt, have a great day! :)