Define the MIME types for the xFlow interface in the IIS web server using the following steps:
1. Start the Internet Information Services Manager tool,
2. Navigate to the xFlow web site and click on MIME types:

3. If there is no MIME type for files with .svg or .svgz extensions, then add them:

Add the following MIME types:
File name extension: .svg
MIME Type: image/svg+xml
File name extension: .svgz
MIME Type: image/svg+xml
4. Now Restart IIS and check the xFlow interface to see that the images are loaded correctly into the browser.