Unlike SharePoint 2013, SharePoint Server 2019 does not require you to manually download and install WindowsServerAppFabricSetup_x64.exe . The AppFabric 1.1 components are now an integrated part of the SharePoint prerequisite installer.

SharePoint 2019 does not require a separate, manual download of Windows Server AppFabric. It uses the AppFabric 1.1 for Windows Server binaries, but they are included either in the SharePoint prerequisites installer or via the Distributed Cache service role. The standalone AppFabric download is typically only needed for older versions (SharePoint 2013).

| Software | Download Link | Required for SharePoint 2019? | | :--- | :--- | :--- | | | Microsoft Link | No (Included in prerequisites) | | AppFabric 1.1 CU (KB3092423) | Microsoft Link | Yes (Auto-installed by SharePoint 2019 prereq) | | SharePoint 2019 Prerequisites | (From your ISO) | Yes (Run this instead) |

SharePoint 2019 includes AppFabric dependencies within its own prerequisite installer. Attempting to manually install the standalone "WindowsServerAppFabricSetup_x64.exe" (version 1.1) may cause the SharePoint 2019 Distributed Cache service to fail.