I've used LaspPass for years, however it no longer works properly since Firefox v57 (now v58); most specifically the Autofill function. Very disappointed. Similarly, the browser extension on Android doesn't seem to work either, and the App doesn't recognise Firefox most of the time.
I've seen many, many complaints about Firefox issues lately. Recently I saw something about LastPass no longer providing support for Firefox? If this is true, I may have to migrate to another password manager.

Very disappointing that it doesn't have feature parity with the Chrome extension.
"Copy Username" and "Copy Password" are the features I miss the most.

Not working with Firefox 58

The new version (since firefox 57) has lots of problems. Missing features, signs out almost every time I close firefox (despite setting options to NOT sign out), will not autofill many login pages, but maybe the biggest is that it uses TONS of memory, slowing everything else down. I was just testing it with about 15 tabs open and lastpass disabled - when I would enable the lastpass add-on my memory usage would jump by well over a gig!

Při každém puštění prohlížeče se musím do LastPass znovu přihlásit, nepamatuje si údaje jak tomu je ve verzi pro prohlížeč Opera. Jakmile bude opraveno, upravím počet hvězdiček.

Love the LastPass service, but it uses a huge amount of memory. Almost 4 GB on Firefox. Seems there is a problem with it that is not being addressed.

Doesn't have 'copy password' option. Have to edit, show password and copy. From a password storage and protection app!

When LastPass updates this extension to work as it does in Chrome and EVEN in MS Edge, I will give it 5 stars! Love the app, and want to be able to use it in Firefox, but there are serious usability issues:

Won't fill some banking sites info
Cursor doesn't automatically go to password when i click the LP icon.
Cursor doesn't automatically go to search box when i need to search within the Extension
No Copy Password link for each username
Have to manually copy/paste all pws for some secure/banking sites

These were all problems in MS Edge for a while, then there was an update.

Mozilla, please update this app!! We want LastPass and Firefox working together.

Prior to Firefox 57 (version is now 58.0.2) LastPass was a very valuable tool, even essential. Tried Firefox 58.02 and LastPass 4.2.3.20 add-on and always reach the same insurmountable problem: every time the browser is closed and re-opened I have to log-in to LastPass using my master password (a long and complicated password).

With Firefox 56.2 (and earlier) this was NOT required and LastPass opened automatically upon each Firefox session starting.

As a result, I re-installed Firefox 56.2 and missing out on better browser security for the sake of keeping LastPass log-in active, even after re-booting my PC. This is apparent on Windows 7 and Windows 10, so can't blame Microshaft this time.

Same problem exists with IE11 on both Win7 and Win10. Something is not communicating well between FF 58.x and LastPass 4.2.3.x

Like others, I am looking for a better (?) password manager.

Use to be a great addon but now there are login issues. I now pay twice as much for "Premium" upgrade and feel these issue are unacceptable.

Very useful plugin. However, on Firefox, it often doesn't work: when I click on the icon, the popup menu doesn't open, and i can't use the autologin features.
Compared to the chrome extension, also, there are some details that I don't like in Firefox: when I open the popup menu, I can directly type in the search box on chrome, while on firefox I need to click in the search bar. When I find the site I want, I could right click on it and copy password in chrome, while in firefox i need to edit the information, view the password (which is not very secure), select the password and copy it.

I love LastPass, but it doesn't always fill out forms correctly. Not it's fault, probably due to web designers making forms in non-standard ways. I used to be able to just copy the password from the LastPass extension and then paste it in. HOWEVER, using the latest Firefox (57) and this version of the extension, that is no longer possible. The best workaround is to select to edit the entry in LastPass, go to that edit page, click to view the password, copy it there, close that window out, then paste it into the form.

I tried this with the latest official release of LastPass, and the beta. Same in both.

I'm sad to say that LastPass is so important for my work that this has actually made me not able to use Firefox as my primary browser. I hope that they add this functionality back in soon.

Need to improve Firefox 57+ support. Doesnt save preferences, doesnt save username when checked, wont fill basic auth popups, or banking sites. Please provide proper Firefox Quantum support!

Missing a lot of features with firefox quantum. Also causing issues with some sites.

2 stars, mostly because it doesn't work on firefox for android even though its listed as compatible. It will install on android but can't even login.

Totally annoying compared to ver 3. Recent version 4 do not work as good as the old ones ... bad programming :(

not working properly on firefox quantum ... it logs off every time a restart the browser .. really annoying

Mozilla Quantum really broke this extension. Features aren't at parity with Google Chrome. It's just gotten worse and worse. Every time I try to use this it breaks now.

Not working well with Firefox Quantum. Far better with Chrome. I also have weird conflicts between Lastpass and eBay. Lastpass is causing the page refresh on eBay to hang. As soon as I logout of Lastpass, eBay then refreshes with no problem. That said, I was always a big fan of Lastpass, but I find it buggy anymore.

I love lastpass but for several weeks now the addon will never probably work in firefox android. When you go to click on a login field lastpass asks you to login, but after you do it never completes or logs you into the app, it just hangs there with the busy swirling wheel indefinitely.

Not easy to use. I can't figure it out. I thought it would be like Google or Yahoo,but ???