: You purchase a license for a modern, supported version like Windows Server 2022 and use the included rights to install an older version.

Numerous third-party websites still list "genuine" keys for Windows Server 2008 R2 at low prices. Windows Server end of support and Microsoft 365 Apps

The most legitimate way to run legacy server versions in a business environment is through .

: Contact a Microsoft licensing specialist at 1-800-426-9400 or visit the Volume Licensing Service Center to discuss your options. 2. Third-Party "Grey Market" Sellers

: You remain legally compliant and have a valid license for the modern OS when you eventually migrate.