Defender for IoT Activation File Not Valid

Chiraag Patel 5 Reputation points
2025-06-17T19:35:56.18+00:00

Deployed the Defender for IoT sensor multiple times with multiple different versions, getting an Activation file not valid error. I have tried creating multiple activation files with the same error.

Verified we can ping out from VM, verified time stamp/ntp settings, system validation says everything is happy and running. READY TO THROW OUT WINDOW.

VMWare esxi 6.7 U2, tested with version 25.x, 23.x, and 22.x

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Thanks,

Chiraag

Azure Internet of Things
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  1. Chiraag Patel 5 Reputation points
    2025-06-18T16:34:19.1266667+00:00

    The 25.1.1 release was buggy so we weren't able to configure it properly, which is why we tried the older versions. Once they released 25.1.2 I went ahead and tried deploying it again and it went through with the activation file.

    1 person found this answer helpful.

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