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kaspersky Endpoint Security activates and then loses license activation

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When trying to activate KES by entering the activation key (I was not given the key file), for a moment the activation is completed (Activation completed successfully) and then shortly after it goes back to not activated again (Application is not activated).

I've already tried uninstalling/installing KES both locally and deploying via KSC but the problem persists. What can be done?


Device operating system: Windows 10 Pro

Kaspersky software:

Kaspersky Endpoint Security for Windows (11.10.0) (English) (Lite encryption)

Kaspersky Security Center 13 Network Agent (

Kaspersky Security Center 13

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Screenshot from 2022-08-17 17-48-52.png

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  • 7 months later...
On 8/22/2022 at 3:23 PM, pierre_rs said:

In case anyone encounters a problem similar to this one:

With the help of Kaspersky support, what solved it was to download the key file from https://keyfile.kaspersky.com/en/ (since I only had the activation key) and activate KES with the key file.

Thanks for posting this Pierre. I had started to get exactly the same issue on a number of our systems for some reason (bit random).  But this has helped resolve the issue for us.

Edited by COPE IT
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