How to verify if the fix has been installed
This patch is entirely cloud-based so it can’t be verified by comparing the OS version or build numbers. To verify the fix, simply open Registry Editor and navigate to the following location:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FeatureManagement\Overrides\4\1837593227
If you’re able to access the above location and you can see the “EnabledState” entry with value 1, that means the fix has been applied.
適用された日付はわからないのか
関連
https://noushibou.hatenadiary.jp/entry/2021/04/24/170325