Upgrade Windows Server 2008 R2 to something supported before Jan. 14th, 2020, here is a link to help you.
Windows Server 2008 R2 SP1
Windows Server 2008 SP2
Hello IT Architects and IT Admin’s.
The end of support (e.g. Security updates) for Windows Server 2008 R2 SP1 (and Windows Server 2008 SP2) is quickly approaching.
When is the end-of-support?
Jan. 14th, 2020.
In order to assist our customer migrate to a supported version of Windows Server 2016 or Windows Server 2019.
The following website https://www.microsoft.com/en-us/cloud-platform/windows-server-2008 has instructions on how you could move it.
On-Premises Upgrade Center
Azure Migration Center
It also contains free e-books for:
Windows Server 2016 Guide
Windows Server on Azure Guide