Wow! That linked info ("Unable to install updates ...") is very extensive ... and recent, too. I'll pass that onto the customer.
We've tried installing the updates by onesies, twosies, threesies, and all of them at once. Generally, the updates are downloaded and they start to install. BUT, the error message appears indicating an unsuccessful installation. The error codes are generally 8007371b or 80073712.
Thanks again for the link.