Firewalls or proxy servers are blocking outbound connections to Microsoft's internet activation servers.
Keys bound to boxed software copies or digital consumer purchases. windows server 2008 r2 activation key
Windows Server 2008 R2 reached its official End of Life (EOL) on January 14, 2020. Extended Security Updates (ESU) ended on January 9, 2023. Despite this, many legacy enterprise applications, proprietary industrial software, and archival environments still require maintaining active instances. Firewalls or proxy servers are blocking outbound connections