You will find product key information for each product, the type of licensing (Volume Licensing Key, KMS, and MAK) and the number of used and available Multiple Activation Key (MAK) activations.
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In addition they will display a black desktop background, and Windows Update will only install critical updates. How to locate Product Keys in VLSC Sign into the VLSC Volume Licensing Service Center Select Licenses > Relationship Summary > Licensing ID > Product Keys.
IT Services provide a server running KMS to provide activation leases.