MAK Count

Overview

• How to use it? Instructions can be found here.
• The MAK count option queries the remaining activation count for a MAK (Multiple Activation Key).
• This option works for Volume:MAK keys of Windows Vista / Office 2010 and later.
• This option does not consume an activation slot to check.

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How does it work?

A SOAP request is sent to Microsoft's BatchActivation endpoint at:

https://activation.sls.microsoft.com/BatchActivation/BatchActivation.asmx

The request uses RequestType 2 (MAK count query) and includes:

• The Advanced PID (Extended PID) of the MAK key (obtained from PidGenX during key checking)
• A request digest signed with HMAC-SHA256 using a fixed key

The RequestXml body is Base64-encoded (UTF-16) before being sent. Microsoft's server responds with an ActivationResponse containing either:

• A positive count, meaning the key has activations remaining.
• 0 count, meaning the key has no activation count left.
• -1 count with an ErrorCode, meaning the key is blocked, invalid, or unsupported.

tip

Generated MAK keys may show a remaining count but cannot actually activate. Use the key certification option to verify whether a key is valid.

Sample request

POST https://activation.sls.microsoft.com/BatchActivation/BatchActivation.asmx HTTP/1.1
Host: activation.sls.microsoft.com
Connection: close
Content-Type: text/xml; charset=utf-8
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; MS Web Services Client Protocol 2.0.50727.5420)
SOAPAction: http://www.microsoft.com/BatchActivationService/BatchActivate
Content-Length: 1175

Body:
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
  <soap:Body>
    <BatchActivate xmlns="http://www.microsoft.com/BatchActivationService">
      <request>
        <Digest>w0yCOnm7D33fAulncg5wo0Al3PvJic4axSSPBjfH8xg=</Digest>
        <RequestXml>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</RequestXml>
      </request>
    </BatchActivate>
  </soap:Body>
</soap:Envelope>

The decoded RequestXml looks like this:

<ActivationRequest xmlns="http://www.microsoft.com/DRM/SL/BatchActivationRequest/1.0">
	<VersionNumber>2.0</VersionNumber>
	<RequestType>2</RequestType>
	<Requests>
		<Request>
			<PID>00000-05045-000-000000-03-1033-26200.0000-1642026</PID>
		</Request>
	</Requests>
</ActivationRequest>

Sample of a response with positive count

<?xml version="1.0" encoding="utf-16"?>
<ActivationResponse xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.microsoft.com/DRM/SL/BatchActivationResponse/1.0">
	<VersionNumber>1.0</VersionNumber>
	<ResponseType>2</ResponseType>
	<BatchId>{f279360a-3ea9-4fff-b9ea-0c9f44612769}</BatchId>
	<Responses>
		<Response>
			<PID>00000-05045-000-000000-03-1033-26200.0000-1642026</PID>
			<ActivationRemaining>851419</ActivationRemaining>
		</Response>
	</Responses>
</ActivationResponse>

Sample of a response with error

<?xml version="1.0" encoding="utf-16"?>
<ActivationResponse xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.microsoft.com/DRM/SL/BatchActivationResponse/1.0">
	<VersionNumber>1.0</VersionNumber>
	<ResponseType>2</ResponseType>
	<BatchId>{0789431e-2a01-48ec-aa82-d21db4e4a12b}</BatchId>
	<Responses>
		<Response>
			<PID>00000-03291-043-000500-03-1033-26200.0000-1642026</PID>
			<ActivationRemaining>-1</ActivationRemaining>
			<ErrorInfo>
				<ErrorCode>0x67</ErrorCode>
			</ErrorInfo>
		</Response>
	</Responses>
</ActivationResponse>

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Supported products

• Windows Vista / Server 2008 and later versions
• Office 2010 and later versions

Note:

• Only Volume:MAK keys are supported for MAK count queries.
• Generated MAK keys may show a remaining count but cannot actually activate. Use the key certification option to verify whether a key is valid.

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MAK count results

Remaining Count	Error Code	Meaning
Positive number		The key has activations remaining.
0		MAK activation limit reached. Activation via CID may still be possible.
-1	0x67	The product key has been blocked and cannot be activated by any means.
-1	0x86	Unsupported product key.

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Feedback / Troubleshooting

• Check here.