Hi @karthikeyan v ,
You can find the Windows 10 Version 1809 and Windows Server 2019 Security Baseline from the link below:
It contains Group Policy settings, documentations and other information for most Windows Server settings that will ensure you use the security settings as per Microsoft's best practices.
You'll also find more information about the Windows Security Baselines over here:
You can also have a look at the following Windows Server Hardening checklist:
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