# The number of allowed activation keys per client has now been exceeded

The server property **numberOfTrialLicensesAllowedPerClient** limits the number of trial licenses that can be activated by a client. A client is uniquely identified by a ComputerID and a ComputerName. A value of -1 means there is no limit.

The **enforceMaxTrialsWhenActivating** controls whether QLM limits the number of trial keys per system. 

Once the number of trials per client has been reached, you have 2 options to allow a specific client to activate:

1. Increase the value of **numberOfTrialLicensesAllowedPerClient** 
2. Deactivate some of the activated licenses

To deactivate some of the activated licenses:

* Launch the QLM Management Console
* Go to the Manage Keys tab
* Search for all licenses that match the client's Computer ID as shown in the screenshot below
* For each found license, you must either delete the license or deactivate it.

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