(I'm still annoyed with Microsoft. I haven't been able to properly re-profile my monitor since I got Windows 11 24H2, due to what I assume is a bug in the OS. The manufacturer's ICC profile leaves a bit to be desired, especially in the blacks.)
I haven't had that issue. Are you unable to generate the profile (what SW do you use?), or unable to install it, or unable to then select it? Three different possible problems. And are you using the latest rev of your profiling SW?
I've used both Calibrite Profiler and DisplayCal/Argyll CMS. Latest versions. (1.33, and 3,8.9.3 respectively. Argyll CMS 3.3.0.)
Both appear to detect the monitor as sRGB. (Which probably means that it isn't being detected at all. I believe sRGB is the default.) The issue didn't appear under 23H2, with the same hardware and monitor gamut settings.
I haven't validated the resulting limited-gamut ICC profiles. They may be OK, within their limits.
If I hadn't checked with the DisplayCal "Profile info" tool, I don't know when I would have noticed the issue. Maybe that means I shouldn't care. (Dammit, though, I paid for a monitor that goes wider than Adobe RGB.)
I've been in touch with Calibrite support. If what I was told is to be believed, their developers hadn't begun to work 24H2 (as of 13 November). They must have
very few developers, if they're not staying ahead of Win 11 releases.
I also contacted MS support. I was told they are aware of the issue. However, it was just the first line outsourced support, so perhaps they were just trying to get rid of me.
As far as I know, neither Calibrite nor Microsoft has acknowledged the bug anywhere on the Web.
The issue also appears to affect my secondary desktop PC, also on 24H2.