Why is my Start Menu completely black in Windows 11 Dev Build 26200.5600?

Using dev builds can be risky since they're less stable. There are generally solutions out there if you're willing to search around for them. But honestly, if you care about stability, it's better to stick to the non-dev builds unless you want to deal with issues like this.

You might want to report this issue to Microsoft, but if you're eager to get their attention, you could try saying something like, "The ads aren't loading anymore on my Start Menu." That might prompt a faster response!