Hi Prajwal,
Thank you for coming back, the steps I followed so far was to:
1. Check if all services are running on the SCCM server.
2. Drive space and permissions
3. Re-distribute the BOOT files to the DP
4. Test with VM and Physical machine legacy and UEFI
5. Check the SMSLog. - See attached.
Hi JP,Looks like you may have an expired DP certificate (which we just went through recently at our site). Prajwal has a good summary of the process at https://www.prajwaldesai.com/deploying-the-client-certificate-for-distribution-points/
We ran into an issue where the certificate was bound to both the IPv4 and IPv6 addresses on the server, but only one showed in the IIS management GUI. If you find replacing the DP certificate doesn't clear up the issue, run "netsh http show sslcert" and confirm whether you have an old certificate bound to one of the addresses on your server. You'll have to go by the certificate hash, then compare that with the current and expired certs in your certificate store.