We'll need to figure this out even with CDs, since you'll need to update in order to get final forms.  What's blocking install would probably block updates too. 

See my post here with a test to diagnose, and a short term fix:

https://proconnect.intuit.com/community/proseries-tax-discussions/discussion/can-t-update-my-proseri...

We're working on a more durable fix. I mentioned it somewhere else, but i believe the issue is that forever we've had one server side certificate for all our domains - turbotax.com, proseries.com, etc.   Turbotax.com is listed as the primary; proseries.com is listed as an alt.  It's been a common practice for years, but sounds like some vendors have started deciding they don't like that (I assume due to some abuse somewhere).  We've got a certificate lined up that's just for proseries.com and should be replacing the other one with it in a few days. Hopefully that will permanently fix the issue.