# Forcibly Revoke Licenses for Inaccessible Clients

If a client machine becomes inaccessible, you can revoke a license on it either by using the IDOL Admin interface, or by sending the `AdminRevokeLicense` action to the License Server.

To revoke a license by using IDOL Admin

1. In the Control menu of the IDOL Admin interface for your License Server, click Licenses.
2. Click the Seats tab.

3. Click the garbage can next to the component whose license you want to revoke.

   The Revoke License dialog box opens.

4. Click Revoke License to revoke the license and free up the seat that the component was using. If a component is running when you revoke the license, it will stop.

   You can view the progress of the action in the Recent Tasks panel.

To revoke a license by sending the AdminRevokeLicense action

- Send the `AdminRevokeLicense` action to the License Server. This action frees the license from the inaccessible machine.

      http://LicenseServerHost:Port/action=AdminRevokeLicense&ClientProductType=productType&ClientIP=clientHost&ClientServicePort=clientPort

  where,

  `productType` | is the product type of the IDOL solution whose license you want to revoke from the inaccessible client.
  `clientHost` | is the IP address of the inaccessible client machine.
  `clientPort` | is the port by which service actions are sent to the IDOL module on the inaccessible client (specified by the `ServicePort` parameter in the module configuration file's `[Service]` section).

  NOTE: Call the `AdminRevokeLicense` function only for inaccessible client machines. Otherwise, the module shuts down and becomes inaccessible.

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