: A cumulative set of security and reliability updates.
: Subscribers often have access to various "refreshed" versions of Windows Server ISOs that include integrated updates.
: While primary downloads now focus on newer versions, you can still find Windows Server 2012 R2 Evaluation ISOs which may include some later rollups.
: Security and quality updates for .NET versions 3.5 through 4.7.2. How to Obtain Integrated Media
If you are looking to verify or manually integrate these specific updates, the primary packages released in August 2018 include:
: Focused strictly on security vulnerabilities.
: Organizations with active licenses can download refreshed media directly from their portal. Important Lifecycle Notice Windows Server 2012 R2 | Microsoft Evaluation Center