# License Activation In some scenarios, the license can't be validated. #### Potential Issues During License Activation 1. **Network Connectivity**: Ensure a stable internet connection. 2. **License Limit**: Verify the license hasn't exceeded its activation limit. 3. **Incorrect License Key**: Double-check the entered key for any typos. 4. **Firewalls/Antivirus**: These might block the activation process; consider temporary disablement. 5. **Black-listed domain:** Contact us for more information on what IPs and Domains to whitelist. The "wisej-server.lic" file might become corrupted or be replaced by an outdated version on your server, causing the Invalid License popup to appear. **To mitigate this issue, we advise that you start by:** 1. Deleting any **old wisej-license.lic** file. 2. Restarting the server. 3. Set the wisej-server.lic file to read-only. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.wisej.com/deployment/troubleshooting/license-activation.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.