Cannot configure ASP.NET on domain: "Can't detect .NET version. Possible site does not use ASP.NET"

Symptoms

• The error like the following occurs in changing ASP.NET setting for domain in Plesk > Domains > example.com > ASP.NET Settings:

  PLESK_ERROR: ASPdotNet() constructor failed: Unable to getDomainConfiguration: aspnetcfg failed: Can't detect .NET version. Possible site does not use ASP.NET
  ---------------------- Debug Info -------------------------------
  0: ASPDotNETUIPointer.php:69
  ASPDotNETUIPointer->accessItem(string 'GET', NULL null)
  1: UIPointer.php:600
  UIPointer->access(string 'GET')
  2: plesk.php:50

Cause

Missing ASP.NET handler for the domain in IIS configuration.

Resolution

1. Connect to the server via RDP.

2. Go to Start > Interner Information Service (IIS) Manager.

3. Open Server > Sites > example.com > Handler Mappings.

4. Press Revert to parent.

   Note: Reverting to the parent configuration will lead to loss of all settings in the local configuration files.

If the issue still persists, apply the solution from the article.