Go to the root server settings and click on the FastCGI Settings icon. Double-click on the argument that matches the path added in the previous section. The Edit FastCGI Application interface will open.

• Click on the EnvironmentVariables (Collection) entry. An ellipsis (...) will appear. Double-click on the ellipsis to edit the environment variables.
• Click the Add button to add a new variable.
• Add PYTHONPATH to the Name entry.
• Add the path to the site code (for example C:\website\) to the value entry.
• Click the Add button to add a second variable.
• Add WSGI_HANDLER to the Name entry.
• If the site is controlled by a file called app.py, add app.app to the value entry (replacing .py with .app).
• Once the variables have been added, push OK. Push OK in the Edit FastCGI Application.

The site should now be live. Navigate to a REST endpoint using a browser to confirm that the site loads as expected.