If the malware has infected the machine, it may be screwing with your internet settings. Hence the malware warning when viewing the M$ site. I'd download Malwarebytes, then reboot into Safe Mode and run Malwarebytes from there. Then after you've run a complete scan in Safe Mode and hopefully removed the malware, I'd boot back up normally and run it again.
And you won't be disappointed with Malwarebytes Pro. It's worth every stinkin penny IMO....
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