SharePoint 2013 Web Application Creation Stuck at "This shouldn't take long"

Problem:
Create new web application from SharePoint 2013 Central Administration site got stuck at "This shouldn't take long" message for long time.

Root cause: Insufficient Server memory!

Solution:
Try closing any open application in the server and free-up server memory. Increase the "Shutdown Time Limit" value of Central Administration's Application Pool in IIS! Here is how:

• Login to your SharePoint server which hosts Central Administration
• Open IIS manager >> Expand the server name and click on Application Pools.
• Locate the SharePoint Central Administration v4 application pool. Right click on it and choose Advanced Settings.
• In the Process Model section, set the Shutdown Time Limit to a greater value. E.g 900.
• Restart IIS.
  

This could also happen when your SharePoint servers running out of disk space, database auto-growth setting isn't enabled or your server antivirus preventing certain processes.

Related post: "Internet Explorer Cannot Display This Page" Error when Creating Web Application in SharePoint 2013