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Microsoft 2YG-00323 Windows Small Business Server 2011 Premium Add-on CAL

Microsoft SBS 2011 Premium Add-on CAL provides additional device or user access to your small business server.

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Overview

The Microsoft Windows Small Business Server 2011 Premium Add-on CAL is a licensing product that grants one additional user or device the right to access a Windows Small Business Server 2011 Premium environment. In a networked small business setup, every client — whether a user account or a physical device — that connects to the server must hold a valid CAL. This add-on is intended for businesses that have already deployed SBS 2011 Premium and need to expand access as they add employees or workstations, without purchasing an entirely new server license package.

It is important to understand that this is purely a licensing entitlement and does not include any physical software, installation media, or server functionality on its own. The SBS 2011 platform was designed as an all-in-one server solution for businesses with up to 75 users, bundling Exchange Server, SharePoint, and SQL Server into a single managed environment. However, Microsoft ended extended support for SBS 2011 in January 2020, meaning the platform no longer receives security updates or patches. Organizations still relying on SBS 2011 should treat additional CAL purchases as a short-term measure while actively planning a migration to Microsoft 365, Windows Server 2022, or an equivalent cloud-based infrastructure.

Key Features

Designed and priced for small businesses

Offers agile, all-in-one, secure server solutions that can help increase margin per unit, create cross-sell opportunities, and drive service revenue.

Solution for challenges such as high cost, complexity, reliability, and manageability create barriers to purchase

Specifications

Product
Windows Small Business Server 2011 Premium Add-on CAL
License Type
Client Access License (Device or User)
Requirement
Existing SBS 2011 Premium installation
Maximum Users (SBS 2011)
75
Microsoft Part Number
2YG-00323
End of Extended Support
January 2020

Pros & Cons

👍 Pros

  • Allows additional users or devices to legally access an existing SBS 2011 Premium installation
  • Designed specifically for small business environments with straightforward licensing
  • Lower cost per CAL compared to purchasing a full server license bundle for additional seats

👎 Cons

  • Windows Small Business Server 2011 is end-of-life and no longer receives Microsoft security patches
  • Only functions as an add-on to an existing SBS 2011 Premium installation, not standalone
  • Legacy product with no upgrade path within the SBS family, as Microsoft discontinued the SBS line
  • Physical media or activation may present challenges given the product's age

Frequently Asked Questions

A Client Access License (CAL) grants a single user or device the legal right to connect to and use Windows Small Business Server 2011. Each user or device accessing the server requires its own CAL.
This listing is for the Premium Add-on CAL, which can be applied as either a Device CAL or a User CAL depending on how your server licensing is configured. Verify your existing licensing mode before purchasing.
No, this is an add-on CAL only. It requires an existing, licensed installation of Windows Small Business Server 2011 Premium to function.
Windows Small Business Server 2011 reached end of mainstream support in 2016 and extended support ended in January 2020. It no longer receives security updates from Microsoft.

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