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In my case I applied  "File Security for Windows Server - Antivirus - Ransomware Prevention" & I found that this policy as culprit but only unassigned is not the solution for this topic you need to uninstall ESET File Security once after unassigned the ransomware prevention policy & you need to create a Product Activation task again it doesn't matter which version you are install.

But as you know the Server's important it is not possible to restart without taking a down time. If there is a task for product deactivation it would be a better (& If there is a please let me know) because in this case you cannot deactivate the seat even through ELA beacuse license cannot synchronize.

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  • 3 weeks later...
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The policy was fixed several months ago. Just send a deactivation task to the affected clients followed by an activation task so that correct license details are retrieved from ESET's servers.

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