I received the Patch Tuesday releases today. KB4532693, KB4537759 and KB4538674 dropped in the first wave and all installed successfully. On a subsequent "Check for Updates" KB4524244 downloaded and installed but on the reboot, it rebooted the first time but froze hard on the second re-boot with Step 2 information and a frozen spinner on my screen, no keyboard or any access. After about 15 mins I finally forced the system down. On the reboot, my Secure Boot flagged me that the keys were corrupted. I was able to get those repaired and reboot into the system. I rebooted a couple more times but no updates attempted to install. On a third "Check for updates, the same (KB4524244) update attempted to download but freezes the system at 94% on the download. Again freezes hard requiring a hard re-set. I tried flushing the Software Distribution cache but get the same results.
FYI: I am running Windows defender with VBS (Credential Guard and Hypervisor enforced Code Integrity on an HP EliteDesk 705 G4 MT with a AMD Ryzen 5 PRO 2400G with Radeon Vega Graphics. I also have a similar set up running on an HP laptop (Intel i5), but the update installed fine on it.