Product Keys

Volume Activation does not change how Volume Licensing customers obtain their product keys . They can obtain MAK and KMS keys at the Volume Licensing Service Center (VLSC) Web page at or by calling an Activation Call Center. Service Provider License Agreement (SPLA) partners can obtain keys only by calling an Activation Call Center. Customers in the United States can call 888-352-7140. International customers should contact their local Support Center. For the telephone numbers of Activation Call Centers worldwide, go to When calling a Support Center, customers must have the Volume License agreement.

Volume Licensing customers can log on to the VLSC Web page at any time to view their KMS key information. The VLSC Web site also contains information on how to request and use MAKs. For more information about MAK and KMS keys, including information about increasing the number of allowed activations, go to the Existing Customers page at

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