Many weeks ago, I downloaded and installed the 17134.1 on a spare laptop, but, on another, decided to let it go through the normal update processes.
I was apprehensive as to what would happen to the preinstalled Laptop, when the big day came, particularly after reading comments on the ".5" update
ultimately, it turned out that for reasons unknown, the ".5" was only for insiders.
I have been using both Laptops constantly, without errors.
I now find that after the April update, the untouched machine did, in fact update perfectly. The preinstalled one did nothing. But I finished up with both machines running the same version
fwiw. Both, and a couple of other machines I handle, updated perfectly.
I still have puzzlement regarding the flow of complaints, as in previous updates/upgrades. Surely brought on by personal hacks into the ealier releases, or, maybe MS have not done their homework .to cover all hardware possibilities?