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Title: The Hunt for AppFabric 1.1 for Windows Server (64-bit): Where to Download the MSI in 2024/2025

Intro: The Legacy Dependency If you are maintaining a legacy Windows Server environment—specifically one running SharePoint, N-Layer WCF services, or WF4 workflows—you have probably cursed the name "AppFabric 1.1" at least once.

Despite its age, AppFabric 1.1 for Windows Server remains a critical component for applications built on .NET Framework 4.x. It provides two key services: distributed in-memory caching (Velocity) and hosting for Workflow Services.

The problem? Microsoft has officially deprecated the on-premise version in favor of Azure Cache for Redis. Consequently, finding the direct 64-bit MSI download on Microsoft’s new website is like finding a needle in a haystack.

Here is exactly where to find the legitimate WindowsServerAppFabricSetup_x64.exe (and its prerequisites) without downloading malware from third-party sketchy sites.

The Official (But Hidden) Microsoft Location

Microsoft no longer lists AppFabric 1.1 in the Visual Studio or Windows Admin center catalogs. However, the official packages are still alive on the Microsoft Download Center via direct links. appfabric 1.1 for windows server 64 msi download

You need two specific downloads:

  1. WindowsServerAppFabricSetup_x64.exe (The main MSI wrapper)
  2. AppFabric1.1-RTM-KB2671763-x64-ENU.exe (The critical cumulative update)

The Direct Download Strategy

Do not search the Microsoft Store. Instead, use the following verified direct links (as of this writing, these resolve to Microsoft’s CDN):

Pro Tip: If the links return a 404, go to the Microsoft Catalog (catalog.update.microsoft.com) and search for "KB2671763".

Installation Order & "Gotchas"

Just downloading the MSI isn't enough. AppFabric 1.1 is notoriously brittle. Follow this exact sequence: Title: The Hunt for AppFabric 1

  1. Pre-requisite: Ensure you have IIS 7.0+ and .NET Framework 4.5 or 4.6 installed. (It says 4.0, but use 4.5+ for stability).
  2. Run the MSI: Execute WindowsServerAppFabricSetup_x64.exe. During setup, choose Customize and ensure the "Cache Service" is checked if you need distributed caching.
  3. DO NOT REBOOT YET: Immediately apply the Cumulative Update (KB2671763). The RTM version has a severe memory leak in the cache host. The KB fixes this.
  4. Configuration PowerShell: After installation, open the IIS Management Console. You will see a new "AppFabric" node. Run the Set-CacheConfig PowerShell commands to bind the service to your network interface (by default, it binds only to localhost, which breaks remote connections).

Why not use a newer tool? You might be tempted to replace AppFabric 1.1 with NCache or Redis. In a perfect world, you would. However, if you are running SharePoint 2013/2016 or a legacy WF4 application, the code is hardcoded to call DataCacheFactory (Microsoft AppFabric API). Replacing that requires a full code refactor. For "keep the lights on" maintenance, you need the original MSI.

Security Warning for 2024+ Since Microsoft no longer issues security patches for AppFabric 1.1 (it follows the .NET Framework 4.x lifecycle, which is end-of-life for on-prem), you should isolate the AppFabric cache cluster on a secure VLAN. Do not expose the caching ports (default 22233) to the public internet.

Final Verdict The 64-bit MSI still exists, but Microsoft hides it well. Use the direct links above or the Microsoft Update Catalog. Save a local copy of both the MSI and the KB to your internal "Legacy Installers" share. You will need them again next time you spin up a Server 2016 or 2019 VM for that old SharePoint migration.

Have you successfully migrated off AppFabric 1.1? Or are you still running it in production? Let me know in the comments below.

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The Official Download Link (Still Alive)

Microsoft has removed AppFabric 1.1 from the main Download Center, but the direct link via the Microsoft Update Catalog still works for legitimate VLSC/MSDN users or via direct HTTP. WindowsServerAppFabricSetup_x64

Official 64-bit MSI filename: WindowsServerAppFabricSetup_x64.exe

Issue: "The update is not applicable to your computer."

This usually occurs if you attempt to install AppFabric 1.1 on an unsupported OS (like Windows

I understand you're looking for guidance on downloading the AppFabric 1.1 for Windows Server 64-bit MSI installer. However, I need to give you an important heads-up first.

⚠️ Important Note: Microsoft AppFabric 1.1 is a legacy product (released around 2011–2012). Microsoft officially ended support for it on April 11, 2017. It is no longer available for direct download from official Microsoft websites like the Microsoft Download Center. It is not compatible with modern Windows Server versions (2019, 2022, 2025) without significant workarounds.

That said, if you are maintaining a legacy system (e.g., Windows Server 2008 R2 or 2012 R2) and have a valid MSDN subscription or legacy volume license agreement, here is the guidance you requested.

Step 3 – Sources to Find the Installer (Legacy Access Only)

Option D – Old Backup / Internal Repositories

Check legacy file shares, DevOps artifact feeds, or backup tapes labeled from ~2012–2016.

Check .NET Framework 4.5+

Get-ChildItem 'HKLM:\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full' | Get-ItemPropertyValue -Name Release