For the 13.5 upgrade, you will need to make sure that this module is not installed. There are two ways to check, both on the web server.
- Check IIS. Open the IIS Website relating to the Intranet (typically Default Web Site). In the main panel, in the section IIS, look for the URL Rewrite icon.
- Check Installed Programs. Go to Control Panel > Programs and Features. Look for the line "IIS URL Rewrite Module"
Note: If you find that the URL Rewrite Module is installed, prior to the 13.5 upgrade you will need to uninstall it in the Control Panel (as in Step 2 screenshot). The upgrade installs a compatible version of this module.