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A single key that can be used to activate a specific number of devices via Microsoft's activation servers. server 2008 r2 key
Windows Server 2008 R2 product keys are used to activate a version of the operating system that introduced several core infrastructure and management advancements. Core Technical Features of Windows Server 2008 R2 Let me know, and I'll do my best to help
Advanced scripts can sometimes extract keys from the registry if they aren't obfuscated. Let me know