Should be working: Works with Firefox 2.0 - 19.0a1

• LastPass Password Manager: https://addons.mozilla.org/firefox/addon/lastpass-password-manager/

I started Firefox in Safe Mode; updated all the plugins and extensions that reported as out-of-date; disabled plugins and extensions that I didn't need; researched all unknown extensions to help me make the decisions. Then I restarted Firefox 16.0.1 in normal mode and installed the "Firefox specific" version of Lastpass - - - it's version 2.00 rather than 2.02 . I performed the necessary restart and voila! - - - Lastpass now functions normally.

Postscript: I maintain five(5) computers running Windows 7 but only one of them experienced the issue being discussed here (Lastpass plugin becomes incompatible). Two other annoyances remain: (1) JAVA always reports itself as out-of-date, regardless of my updating efforts, and (2) Firefox 16.0.1 continues to experience "freeze ups" several times per day. I'm looking forward to the next FF version that cures this bug!

I have Firefox 17.0.1 Lastpass is not compatible

i add an image: http://i.imgur.com/QtRRE.jpg

Hi cellus

Did you try to search for updates of your extensions via the Tools button menu at the top of the about:addons page to see if there is a compatibility update available?

Hi,

no update available for Lastpass with FF 17.0.1 as you can see on the image :

http://i.imgur.com/vONls.jpg

It is possible that there is a problem with the file(s) that store the extensions registry.

Delete the files extensions.* (e.g. extensions.sqlite, extensions.ini, extensions.cache) and compatibility.ini in the Firefox profile folder to reset the extensions registry.

• https://support.mozilla.org/kb/Profiles

New files will be created when required.

See "Corrupt extension files":

• http://kb.mozillazine.org/Unable_to_install_themes_or_extensions
• https://support.mozilla.org/kb/Unable+to+install+add-ons

If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the Tools button at the left side of the Search Bar (or click the "Find Updates" button in older Firefox versions) to check if there is a compatibility update available.

If this hasn't helped then also try to delete the addons.sqlite file.

Hi cor-el,

I've tried to delete the file.. FF installed again all extensions, but i have still the compatibility warning with Lastpass, and Lastpass is still marked as not compatibile.

I've added in about:config the entry "extensions.compatibility.17.0" as false and now Lastpass is working, but i don't like this way...

On one computer 1 administrator and 2 users.

I have the same problem at the administrator - LastPass is incompatible with Firefox 17.0.1.

2 users is OK LastPass working.

• "Delete the files extensions.* (e.g. extensions.sqlite, extensions.ini, extensions.cache) and compatibility.ini in the Firefox profile folder to reset the extensions registry. ".
• "delete the addons.sqlite file".

Did not help.

I took from one user extensions.ini + extensions.sqlite and put it to administrator - then LastPass work.

Close and reopen Firefox LastPass work.

After restarting the computer LastPass does not work.

On registration LastPass asked me for Social Insurance #. Is this company even legit? I've never been asked for SS by a legit company.