# TroubleShooting

In the new Windows 11 environment, Windows Defender provides protection against the execution of third-party DLLs. This may cause the Courier generator to fail to execute properly. To fix this, please perform the following operations.

1. Open the folder of ***\\cgi\_studio\_courier\\bin***
2. Select ***DefaultGeneratorTemplates.dll*** from within the folder, then open the properties window from the context menu.
3. In the properties window, uncheck the security section at the bottom of the **General** tab.
4. Start the generator again and check that it is working correctly.

<p class="callout info">If the above operation does not improve the situation, please contact our support team via <span style="color: rgb(230, 126, 35);">[CGI Studio Lighthouse](https://forum.cgistudio.at/)</span>.</p>