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Error Activating Product after upgrading to Server Security 11.0.1

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we are experiencing some problems while upgrading our ESET Server Security products.

When an update from version 10.0.1 to 11.0.1 is performed, the "used license" gets removed from the computer and you cannot reactivate it.

We tried activating it via the on-prem web GUI, but it didn't work. It always returns "failed" without any more detail.



Following shows in the web gui for upgraded products:



Now the same compute, after a downgrade to 10.0.1:



The management console also throws an alert that warns about the product not being activated:



Weirdly enough, some servers don't have a problem and upgraded/activated just fine to ver. 11.0.1:



Our inventory consists of Windows Server 2012 R2 and Win Server 2016.

The problem does occur on both OS-versions.


Does anyone have similar issues and some tips?


Thanks, Tim

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Is it possible to activate the troublesome instances of ESET Server Security v11 manually by entering your license key under Help and support -> Change license?

Please enable advanced licensing logging in the advanced setup -> Tools -> Diagnostics and try to activate ESET. If that fails, disable logging and collect logs with ESET Log Collector.


If the logs don't shed more light, I'd kindly ask you to raise a support ticket for help with further troubleshooting.

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