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Accepted
Dave Beer
Asked: 2016-06-23 04:17:01 +0800 CST

Unable to Activate Windows EC2 instance via KMS

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I have an EC2 Instance Windows Server Datacenter 2008, and I'm getting an "Unable to Activate Windows" message. Even after following through the instructions here

amazon-ec2 kms

1 Answers

  1. Best Answer

    For some reason, the Registered KMS Machine name wasn't set. When I ran:

    slmgr /dlv

    There was no "Key Management Service client information" section.

    The fix then, was to run the following to manually set a KMS:

    slmgr /skms 169.254.169.250:1688

    After which, you can activate windows again with the following:

    slmgr /ato
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