KB3721: "Internet Explorer cannot display the webpage" error message appears when opening MicroStrategy Web and Web Administrator 9.4.1 and above on Windows based systems with IIS

SYMPTOM
When accessing the Main or Admin page in Strategy Web 9.4.1 and above users see the error below.
Sample Code/Error

Internet explorer cannot display webpage.

 
Similar errors happens in Chrome and Firefox. Upon selecting 'Diagnose Connection Problems’, the following error is displayed:

 
 
Sample Code/Error

"localhost” is not set up to establish a connection on port “World Wide Web service (HTTP)” with this computer.

CAUSE
The World Wide Web Publishing service is down. This is a Microsoft service that allows IIS to publish content of the web application hosted in it and is called w3wp process.
 
ACTION

1. Go to Start > Run > Services.msc
2. Look for the 'World Wide Web Publishing' service and double click on it to access its properties.
3. Change the 'Startup Type' to Automatic and start the service.
4. If starting the service fails, check that the Windows Process Activation service is on Automatic and on, as well. If the Windows Process Activation service is also down it will cause all processes for message-activated applications fail to start, causing IIS to be stopped.

Note: For more information regarding these services contact Microsoft.
WARNING
The third-party product(s) discussed in this technical note is manufactured by vendors independent of Strategy. Strategy makes no warranty, express, implied or otherwise, regarding this product, including its performance or reliability.
Article Reference Number: 
KB3721