Plesk for Windows fails to load and the following error is displayed in the browser:
HTTP Error 500.21 - Internal Server Error Handler "PleskEngine-FastCGI-php" has a bad module "FastCgiModule" in its module list
CGI role is not installed in IIS server. There is no
Open Server Manager, click Roles and install CGI role.
Open IIS > Sites and delete
Open IIS > Application Pools and delete
PleskControlPanelsite according to 111729.