Change Application Pool of a Website in IIS

1. Login to your VPS.
2. Open Start > Administrative tools > IIS Manager.> Expand the “Sites” folder from left-side panel.
   
   

3. Select the particular website which is facing 'targetFramework' error.
4. Right click on the Website and select Manage Web Site > Advanced Settings, as shown in following image:
   
   
    
5. Change the ‘Application pool’ to ASP.NET 4.5 as below.
   
   
    
6. Click on OK command button.