Cannot validate pgp signatures of microsoft security bulletins

So I've been getting Microsoft security bulletins for years and I thought I would actually verify the PGP signature. I have not been able to yet. I found two public keys on microsoft sites:https://technet.microsoft.com/en-us/security/dn753714was the first key I imported. My PGP software says it is the wrong key for the June 2015 security bulletin:PHPWrong signature of Microsoft SecurityNotifications (Key ID: BF05BFF43AA549E5)Notably on that link above, the page says it was "Updated: December 15, 2015" (in the future). I found that page linked fromanother page.I found another key and replaced the above key with a slightly older one. I still get an "unknown" key errorTextSigned with unknown key(Key ID: BF05BFF43AA549E5)I also foundboth keyson the MIT key server.What do you get when you verify Microsoft PGP signatures?
This topic first appeared in the Spiceworks Community

Hi,
Thanks for your advise. I record your feedback.
Juke Chou
TechNet Community Support

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