Azure Virtual Desktop - Black Screens on logins - What we've tried so far

Just chiming in here with three notes in the hopes that they help other people.

1. I'd like to echo what other people have noted: replacing your session hosts with Windows 11 24H2 DOES seem to resolve the issue. As a matter of fact, I have never seen this problem with Windows 11, only on Windows 10. I only started noticing this problem (this time around -- see point 2) from about October 14 forward. I have some self-service session clearing set up for my environment and I noticed a marked increase in the use of that tool (combined with tickets) from that day forward. I replaced one of my pool's session hosts with Windows 11 24H2 and the difference is measurable.
2. I mentioned "this time around" above. I first noticed this problem at the end of 2023, mainly in one of my smaller (but higher-used) host pools. I engaged Azure support as I was at my wit's end. I finally did the same thing there, rebuilding the pool with Windows 11 hosts, and again, the problem disappeared. I knew I'd have to do this to all of my pools anyway, but I didn't have the time yet to do it.
3. There was a notification sent out yesterday from Azure Service Health providing more information on the issue. As you can probably guess, it contains what everyone already noticed here, and it suggests https://support.microsoft.com/en-us/topic/october-22-2024-kb5045594-os-build-19045-5073-preview-f307a4b0-f62d-4c28-9062-44207aea55c3 (if you can't go to Windows 11) and also suggests that Windows 11 is less impacted by this issue.