Windows Mail

Well I have some very good news about the WinMail HTML crash problem for 64 bit users. MS has recently released an IE Cumulative update that in the process of fixing a few dozens other important issues, has also affected the outcome and has fixed this crash issue for 64bit WinMail users too.
In the end I couldn't have hoped for a more easier and better outcome.

I've tested this tonight and now all Six problematic crash .eml files that have been sent in from other users, all of them now open in Win7 64 bit without crashing anymore.

You can download the update from Windows Update, if it's not already installed by now.

You can read about the update details here:
MS14-010: Cumulative security update for Internet Explorer 11 in Windows 7 x64 Edition

You can download it from Windows Update, or here:
Download Cumulative Security Update for IE 11 in Windows 7 x64 Edition (KB2909921)

I checked the mails from Booking.com, no crashes any more! This means that Microsoft finally fixed that nasty bug in mshml.dll with last update. I use IE11 on my system as a secondary browser after primary Chrome. Thank you, endeavor!

Thank you Bill (Slartybart), and Slavic for your post, also a thank you to Each of those members and non-members who've sent in their problematic .eml files; even Slavic your crashtest.eml file was very insightful, nice job. A thank you to Peter (Ex_Brit) he sent me updates screenshots and other version informations I asked for when on the hunt to track it down why it worked for him and not us, all of which led to installing that last recent update that I can see changes/shows all of the necessary files being reworked/updated - everything from the the iexplorer.exe in the starndard 64 and well as the (x86) programs folder, same thing for a few mshtml related files in both standard Systems (64) folder and well as the Syswow64 folder (which un-intuitively named, but is the 32 bit folder) ...where it changed mshtml related files in there too, and on and on and on with another hundred files, and registry changes, for the good.
Thanks to everyone! ...including of course Microsoft ! ...even though it wasn't directly fixed for WinMail, it fixed lots of problems that were the very cause of the problem, and many other problems non-related as well.

Endeavor, you are amazing, a great guy and very helpful. I finally opened the email I sent to you and WM opened it just fine without crashing. That's the first time. I'll keep an eye out for any more and see how it goes. I was surprised to see it work like it should- a nice surprise, though. Thanks so much for the great effort you make to help all of us out here in the wilds.

Ex_Brit said:

Glad to hear the news, but wonder why I wasn't effected by it.

Because you had your Automatic Updates set on Automatic, and just the day before you tried the problematic .eml file, your system had already auto-updated automatically installed the KB update that fixed the problem. If you had opened that .eml file just the day before, You, Would of Crashed, guaranteed.. ..and so fate and timing saved you the hassle. You had never seen one of those particular .eml files before that moment and so you did not experience it as is was.
If you want to prove to yourself that you will crash, just un-install that KB and try to open your problematic .eml file.

As I said though thanks for being a helpful sport and sending me everything I asked for in identification.