Officially 37.0 is the latest version. On date 2april2015 i have installed it on my pc.

Hi BillJonesSmith, Firefox 37 is the latest version of the browser. Automatic updates from prior versions got disabled for the moment though while Mozilla is investigating a start-up crash in the new version that could occur in some situations with particular third party software...

Note that this is only a problem on Windows and other platforms like Mac and Linux aren't affected AFAIK.

• Bug 1149761 - Users reporting crash in gfxWindowsPlatform::InitD3D11Devices() after updating to Firefox 37
• Bug 1149864 - When safemode is on we should not attempt to create any device

So it should be fine to download Firefox 37.0 for Linux and Mac OSX from www.mozilla.org/firefox/all

I just updated Firefox today (4/4/15) to 37.0.1 and Firefox can no longer access any Mozilla website. The https://www.mozilla.org.... site goes immediately to an error webpage "This Connection is Untrusted", which reports that: www.mozilla.org uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. (Error code: sec_error_unknown_issuer) I can Add an exception for Mozilla.org, but each time I run Firefox and try to access a Mozilla website, I have to go through the same steps. I do not have any problem accessing Mozilla.org on my other browsers (Chrome 41 and IE 11).

Skiddles said

I just updated Firefox today (4/4/15) to 37.0.1 and Firefox can no longer access any Mozilla website....

Your question being at https://support.mozilla.org/en-US/questions/1055794 and this thread is unrelated.

edit: I was not the one that locked this thread.