Please refer to the following steps to set the default Plesk page in Windows.
- Login to your Plesk control panel here
- Select the Websites & Domains.
- Go to your domain and click on the Virtual Directories
- Now, click on the Directory Properties button.
- Inside the Documents section, type your default page name and click on ADD button.
- Take your page to the top of the list by clicking on the UP button.
- Finally, click on the OK button.