I've just installed Windows 10 Pro 1709 on a new workstation, so I went directly to "Windows update" without doing anything else before. It updated a few things, but now it keeps saying that
Your device is at risk because it’s out of date and missing important security and quality updates.
When I press Check for updates
it runs the check for a bit and then comes back repeating the above message, over and over.
I've tried running the "Windows update troubleshooter" but to no avail.
I've tried installing a cumulative patch (KB4074588) but still no luck.
What could I try next?