# Unknown sources in Android To install such enterprise applications you have to allow 'unknown sources' in the system settings of your android device to finish the installation of your application. To solve this issue follow these steps: 1. Navigate to your **Systemsettings** > **Security**. 2. Check the option **"Unknown sources"**. 3. Tap **OK** on the prompt message. 4. Select **"Trust"**. After that all enterprise applications can be installed without any issue.