Microsoft

Microsoft C78-00006 Windows 2000 Upgrade 20-Client License

Name: Microsoft C78-00006 Windows 2000 Upgrade 20-Client License
Brand: Microsoft
SKU: C78-00006

Upgrade Your Network Infrastructure The Microsoft Windows 2000 Competitive Upgrade (20-Client License) is designed to provide a seamless upgrade path for existing Windows users. This version allows you to upgrade your network infrastructure to the reliable and secure Windows 2000 platform, suppor...

$302.63*

Check availability

*Price sourced from Amazon.com. Last updated:Oct 10, 2026.Price and availability are subject to change — details.

Affiliate Disclosure: As an Amazon Associate, Studio Supplies earns from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

Upgrade Your Network Infrastructure

The Microsoft Windows 2000 Competitive Upgrade (20-Client License) is designed to provide a seamless upgrade path for existing Windows users. This version allows you to upgrade your network infrastructure to the reliable and secure Windows 2000 platform, supporting up to 20 client connections.

Specifications:

Product Type: Competitive Upgrade
Operating System: Microsoft Windows 2000
License: 20-Client License

Specifications

Operating System

Windows 2000

License Type

Upgrade

Client Licenses

Frequently Asked Questions

What is included in the Microsoft C78-00006 package?

This package provides an upgrade license for 20 clients to the Windows 2000 operating system.

How many computers can be upgraded with this license?

This license allows for the upgrade of up to 20 client machines.

Is Windows 2000 a current operating system?

No, Windows 2000 is an older operating system and is no longer supported by Microsoft with security updates.

Can this software be installed on any computer?

It is intended for upgrading existing Windows installations on compatible hardware, but its compatibility with modern hardware is limited.

Is this a full version of Windows 2000 or an upgrade?

This specific product is an upgrade license for Windows 2000.

Strengths & Trade-offs

👍 Pros

Provides a straightforward upgrade path for up to 20 client machines to the Windows 2000 operating system.
Offers a specific licensing solution, helping organizations manage their software compliance efficiently.
Designed to enhance system stability and security over previous Windows versions at the time of its release.
Can standardize the operating environment across multiple client computers within a network.
A direct solution for businesses or institutions looking to update their existing infrastructure to Windows 2000.

👎 Cons

Windows 2000 is an outdated operating system, lacking modern security updates and compatibility with current software.
The upgrade is limited to 20 clients, which may not be sufficient for larger organizations.
Modern hardware may not fully support or perform optimally with the Windows 2000 operating system.
Finding compatible drivers for contemporary peripherals and hardware components could be a significant challenge.
The system's security posture would be highly vulnerable to modern threats due to discontinued support from Microsoft.