Thankyou so much Ron. This needs to be pinned at the top if possible, and a new email sent out with clear instructions.
I am glad I found the email suspicious and checked it out before installing, as I do not need it.
The Knowlage Base Article seems to suffer the common low quality of info found these days, and is not only thin on info, but also misleading.
It says there are no prerequisites, but now we find that there is 1 very important prerequisite, "Outlook Mail (Preview)" which is the only reason to use this update.
Personally I found the email suspicious due to the use of an uncommon URL and an obfuscated key, which sends me to the real location.
http://communication.microsoft.com/Key-6859401.C.M2ww.N.K4.-.Fct8QM
Virus Total cleared it and showed me where I would actually be sent.
Q: Why could Microsoft not just send people a normal link to the download ?
A: So we can be tracked even if we use a tracker-blocker.
Considering my MS ID was used to login, this seems pointless.
Being that obfuscated links is the common tactic of malware spreaders, I question the use of an obvious tracking method to hide a destination URL, while we are still struggling to teach regular users how to browse safely and spot scams and malware.
The use of obfuscated links in emails has become one of the worst and most common security threats, and we do not need "trustworthy" companies to be using non-trustworthy methods.
Getting users desensitised to not knowing where they are going to land, is quite frankly irresponsible.