Winsage
October 19, 2026
Windows 11 includes a compatibility feature called EmulateHeap, which allows legacy applications to access Windows 95’s memory management system. This feature is present in the Windows 11 26H2 version and enables users to run older applications that depend on the original memory manager. Microsoft modified Windows 95's memory management specifically for the game SimCity, creating a workaround that prevented memory from being freed immediately. EmulateHeap was developed to address compatibility issues for various applications that relied on Windows 95's memory management quirks. It works by redirecting an application’s heap calls to mimic the behavior of Windows 95. EmulateHeap is part of the Compatibility Administrator tool within the Windows Assessment and Deployment Kit (ADK), which supports Windows 11 26H2. Users can locate EmulateHeap in the Compatibility Administrator by creating a new database and searching for compatibility fixes. Despite this support, some users have reported issues with certain games after updates. Microsoft continues to support Windows 95’s heap manager for select older applications but has discontinued support for others, like 3D Pinball, due to technical limitations.
