Microsoft Windows Svr Datacntr 2025 English 1pk DSP OEI 2Cr NoMedia / No Key. Tracking ID to Activate. EP2-25297 Note Add on License Activation new Steps 1 Sign in to the Volume Licensing Service Center (VLSC) using your Microsoft account associated with the license purchase. 2 Locate the 'Licenses' section and select the option to 'Add Licenses.' 3 Enter the Tracking ID provided with your additional licenses. 4 Follow the on-screen instructions to complete the activation process.