http://www.microsoft.com/security_essentials/

Microsoft Security Essentials 2.0.657.0 out now!

But seriously, dammit. Why do they do this. :(

Updates released on Tuesday - I go during the night to deploy them.
Silverlight update released on Wednesday - I go during the night to deploy it.
MSE update released on Thursday - Well, F U! I won't go tonight to deploy it! :angry: It will have to wait until tomorrow.

Installation keeps failing due to an unknown error, no matter if I upgrade or do a fresh install.

I'm on Win 7 64 Bit btw.

Hmm... worked fine here on one 7 64bit system and two XP systems.

Here's the link for anyone not seeing the update:

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=e1605e70-9649-4a87-8532-33d813687a7f

Also some tips on Tweakguides regarding new features: http://www.tweakguides.com/