# What are the possible causes for an unsuccessful activation of my BurpGPT Pro?

There are several potential reasons for issues with the licensing system:

* **Network / Security Configuration:** Certain network setups or security systems may prevent connection to the licensing system. Ensure that **HTTP/HTTPS traffic to and from `burpgpt.app` and `burpgpt.netlify.app`** is allowed. If necessary, try adjusting your network or security settings to allow this traffic.
* **Clock Synchronization:** Time-related activation issues might be due to system clock discrepancies. Wait a few hours before seeking further support.
* **Corrupted Download:** A corrupted .jar file download can cause licensing errors. Re-download the file to resolve these issues.
* **Java Version Compatibility:** Ensure your system meets the Java requirements listed in the [Prerequisites](https://docs.burpgpt.app/getting-started/installation#prerequisites) to avoid compatibility issues with the licensing system.


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