All over the news today (2020-01-14) is the story that the NSA and Microsoft have reported a critical security vulnerability in Windows 10.

But I haven't been able to find clear instructions about how to ensure that Windows Update has worked properly.

When I click the Start button and then then type "winver" and click "Run command", I see that I have Windows 10 Version 1803 (OS Build 17134.191)

Windows > Settings > "Update & Security" > "See what's new in the latest update", it bounces me to https://support.microsoft.com/en-us/help/4043948/windows-10-whats-new-in-recent-updates, which doesn't seem to mention security at all.

The Windows Update feature itself seems flaky, confusing, and unreliable.

I'm the most tech-savvy in my large extended family, and I generally try to help others (especially older generations) keep their systems working well, but right now I'm struggling to find a set of steps I can walk them through to confirm that their systems are no longer vulnerable.

1 Answer 1


The relevant patches that must be download and applied are described in the following MSRC Portal page.

Matching the OS version number to your system, clicking the article number brings you to a page showing the build number your system should show after you patch.

For example, for Windows 10 Version 1809 for x64-based systems, this link shows the resulting build number (OS Build 17763.973)

  • 1
    The question was simply "how to check" that the patch has been applied. Now the answer explains that.
    – schroeder
    Jan 14, 2020 at 22:51
  • @schroeder Mine now says Version 1903 (OS Build 18362.592), so I guess Windows Update gave me some other upgrades along the way.
    – Ryan
    Jan 15, 2020 at 1:48

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