Well, I will say I'm stamped, because I am -ed to say I haven't been able to solve this.
(OK, stumped!)

I'm setting up an old laptop for someone and its Win 10 install is only at Build 17134, even after a
few updates in the past days. The latest I have on my own is Build 18362.

Is there a way to [bypass waiting for intermittent updates and] go straight to the latest build?

Ta a lot.