I'm IT helpdesk for a 100 person SMB. Working on a whole stack of Dell Latitude 5520, 5530, and 5531's, many of them right out of the box or recently imaged, fresh updates to Windows 11 22H2. All of them had this error.
After hours of googling and hair-pulling this solution worked for me, as well. Although my implementation was a bit different. I first ran the 1.0.2207.20002-0 Microsoft.SecHealthUI_8wekyb3d8bbwe.appx file from the Box download. Then I reboot "in safe mode" to get to a command prompt. Only from there am I able to delete the contents of the C:\Windows\System32\SecurityHealth folder. No amount of fiddling with permissions allows me to delete it otherwise, because the unstoppable "Windows Security Service" has a lock on those folders when Windows is running.
So after running the appx and deleting the folder in safe mode I confirm that Windows Security Center has full functionality (including all the Device Security functions) again. Thank you for your efforts on behalf of the community, hopefully M$ will see this thread and release a proper fix in the near future. 😉