# Troubleshoot License Errors

The table contains explanations for typical licensing-related error messages.

License-related error messages
Error message | Explanation
--- | ---
Error: Failed to update license from the license server. Your license cache details do not match the current service configuration. Shutting the service down. | The configuration of the service has been altered. Verify that the service port and IP address have not changed since the service started.
Error: License for ProductName is invalid. Exiting. | The license returned from the License Server is invalid. Ensure that the license has not expired.
Error: Failed to connect to license server using cached licensed details. | Cannot communicate with the License Server. The product still runs for a limited period; however, you should verify whether your License Server is still available.
Error: Failed to connect to license server. Error code is SERVICE: ErrorCode | Failed to retrieve a license from the License Server or from the backup cache. Ensure that your License Server can be contacted.
Error: Failed to decrypt license keys. Please contact Autonomy support. Error code is SERVICE:ErrorCode | Provide Micro Focus Big Data Support with the exact error message and your license file.
Error: Failed to update the license from the license server. Shutting down | Failed to retrieve a license from the License Server or from the backup cache. Ensure that your License Server can be contacted.
Error: Your license keys are invalid. Please contact Autonomy support. Error code is SERVICE:ErrorCode | Your license keys appear to be out of sync. Provide Micro Focus Big Data Support with the exact error message and your license file.
Failed to revoke license: No license to revoke from server. | The License Server cannot find a license to revoke.
Failed to revoke license from server LicenseServer Host:LicenseServerPort. Error code is ErrorCode | Failed to revoke a license from the License Server. Provide Micro Focus Big Data Support with the exact error message.
Failed to revoke license from server. An instance of this application is already running. Please stop the other instance first. | You cannot revoke a license from a running service. Stop the service and try again.
Failed to revoke license. Error code is SERVICE:ErrorCode | Failed to revoke a license from the License Server. Provide Micro Focus Big Data Support with the exact error message.
Your license keys are invalid. Please contact Autonomy Support. Error code is ACISERVER:ErrorCode | Failed to retrieve a license from the License Server. Provide Micro Focus Big Data Support with the exact error message and your license file.
Your product ID does not match the generated ID. | Your installation appears to be out of sync. Forcibly revoke the license from the License Server and rename the `license` and `uid` directories.
Your product ID does not match this configuration. | The service port for the module or the IP address for the machine appears to have changed. Check your configuration file.

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