Same issue here. Getting random BSOD almost daily, even after a fresh installation of Windows. All updates applied.
Windows 10, ASUS Zeith Extreme Alpha with an AMD 2950X, GTX 1080 Ti, 64GB DDR4 RAM
SCEP Certificate enrollment initialization for WORKGROUP\AJE$ via https://AMD-KeyId-578c545f796951421221a4a578acdb5f682f89c8.microsoftaik.azure.net/templates/Aik/scep failed:
GetCACaps
GetCACaps: Not Found
{"Message":"The authority \"amd-keyid-578c545f796951421221a4a578acdb5f682f89c8.microsoftaik.azure.net\" does not exist."}
HTTP/1.1 404 Not Found
Date: Tue, 05 Oct 2021 14:25:59 GMT
Content-Length: 121
Content-Type: application/json; charset=utf-8
X-Content-Type-Options: nosniff
Strict-Transport-Security: max-age=31536000;includeSubDomains
x-ms-request-id: 9d188a7c-199f-42a7-85c6-6d4bb2742e9e
Method: GET(390ms)
Stage: GetCACaps
Not found (404). 0x80190194 (-2145844844 HTTP_E_STATUS_NOT_FOUND)