Microsoft

Microsoft 621-00138 Proxy Server 2.0 NT 4.0 Upgrade (Old)

$448.99*
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*Price sourced from Amazon.com. Last updated:Jun 28, 2026.Price and availability are subject to change.

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Specifications

Product
Proxy Server 2.0
Operating System
NT 4.0
Type
Upgrade

Pros & Cons

👍 Pros

  • Designed for upgrading Microsoft Proxy Server 2.0 on Windows NT 4.0, offering a specific purpose for existing users.
  • As an "Upgrade" product, it likely provides enhancements and new functionalities over the previous version 1.0.
  • Supports the Windows NT 4.0 operating system, targeting a specific enterprise environment from that era.
  • Provides proxy server capabilities, essential for managing internet access and security within a network.
  • A Microsoft product, suggesting integration with other Microsoft enterprise software of the time.

👎 Cons

  • This product is labeled "Old" and specifically for Windows NT 4.0, indicating it is severely outdated and not compatible with modern operating systems or hardware.
  • Support for Proxy Server 2.0 and Windows NT 4.0 has long since ended, meaning no security updates or technical assistance are available.
  • Deploying such an old proxy server could introduce significant security vulnerabilities to any modern network environment.
  • The functionality offered would be vastly inferior to contemporary proxy solutions and network security appliances.
  • Compatibility with modern web browsers and internet protocols would be severely limited, impacting its practical use today.

Frequently Asked Questions

The Microsoft Proxy Server 2.0 NT 4.0 Upgrade is designed to upgrade an existing Microsoft Proxy Server 1.0 installation to version 2.0 on a Windows NT 4.0 operating system.
This software specifically requires the Windows NT 4.0 operating system for installation and operation.
As it is designed for Windows NT 4.0 and labeled "Old," this product is severely outdated and not recommended for use in modern network environments due to security and compatibility issues.
Microsoft Proxy Server 2.0 provides proxy services to manage internet access, caching, and some level of security for networks running on Windows NT 4.0.
No, this upgrade is specifically for Windows NT 4.0 and is not compatible with newer versions of Windows operating systems.
Support for Windows NT 4.0 and associated products like Proxy Server 2.0 has been discontinued by Microsoft for a long time.
The "Upgrade" designation indicates that this software is intended to update a previous version (likely 1.0) of Microsoft Proxy Server, rather than being a full installation package.