We're planning to upgrade our onPrem CRM Dynamics from version 8.2 to version 9.0.

The CRM Dynamics 8.2 is located on a Windows server 2012 R2.

It has following external connections to other environments:
- Microsoft SQL Server 2014 (external server running windows server 2012 R2)
- Sharepoint version "16.0.4483.1000" (external server running windows server 2012 R2)

1. Can we upgrade CRM Dynamics to v9.0 without upgrading the other platforms? Or will we with CRM Dynamics 9.0 get problems using older Sharepoint server and SQL server?
2. Should we upgrade the server to Windows server 2016 or newer? Or is there no point for this?

Guidance and general help is very welcome Slight smile