# Revoke Stale Licenses

If a license is stale, you can revoke it by sending the `RevokeStaleLicenses` action. A stale license is one that has not been issued or updated within a specified number of seconds. You can specify the number of seconds after which a license is regarded as stale as the value of the `UseBy` action parameter.

For example:

    http://LicenseServerHost:port/action=RevokeStaleLicenses&UseBy=18000

You can also use the `ReplaceStaleLicenses` and `UseLicenseWithinSeconds` configuration parameters in the `[Server]` section of the configuration file to automatically revoke stale licenses. For more information, refer to the License Server Reference.

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