Microsoft has announced that version 1903 of Windows 10 will be blocked from Surface Book 2 users. It seems that the update conflicts with the Nvidia GPUs that those computers use.
A compatibility glitch with the May 2019 update is causing the discrete GeForce GTX 1050 used in the high-end Surface Book 2 to become undetectable. This bug, in turn, causes some apps and games that rely on the GPU to crash. Microsoft said that until that glitch is resolved, Surface Book 2 owners won’t be able to download the update.
Unfortunately, this isn’t the first issue Microsoft has had with the Windows 10 May 2019 update. Earlier this spring, Microsoft warned that the update might not install properly if external USB storage devices or SD cards were in use. While there was a quick workaround for that issue (removing the USB device or SD card), it’s unclear if Microsoft will come up with a quick fix for this GPU bug.