Hi anonymous userLim95131,
The error clearly states that there's an "Access Denied" to something, start by making sure of the following:
- Make sure the account running the installation has local admin on both the new management server and the SQL server.
- Try running the setup with "Run as administrator".
- Make sure you've restarted the management server.
I assume you've configured the TLS according to the documentation here?
How to implement Transport Layer Security 1.2
https://learn.microsoft.com/en-us/system-center/scom/plan-security-tls12-config?view=sc-om-2019
The error is familiar and has been produced on management server installations when TLS 1.0 is disabled and prerequisites for TLS 1.2 are missing, Kevin described a similar case on his blog post (the first under "known issues"), although it is not an "Access Denied" error:
https://kevinholman.com/2019/03/14/scom-2019-quickstart-deployment-guide
I would check that the TLS is configured correctly as it sounds to me that's most likely the culprit, you can check with Kevin's script and his blog post here:
https://kevinholman.com/2018/05/06/implementing-tls-1-2-enforcement-with-scom
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Best regards,
Leon