To perform a complete installation, you typically need several core packages. These can be found on the Microsoft Download Center: Planning, Deploying, and Maintaining Guide for Dynamics 365
The official installer for (version 8.0) and its subsequent updates are still available for on-premises deployment. This release, which later transitioned into the Dynamics 365 branding with version 8.2, remains a critical foundation for organizations maintaining legacy customer relationship management infrastructures. Official Download Links and Components download microsoft dynamics crm 2016