Did you find the error “HTTP Error 404.3” ? Yes, I found the error at the time of deploying my ASP.NET web application to IIS 7. I found the following error (screen shot).
To solve the error follow the following steps:
Step 1: Go to Control Panel -> Programs and Features -> Turn Windows Features on or off
Step 2: Mark the features as like following image.
Step 3: Click OK and reset IIS.