Sign in as different User - SharePoint 2013 and higher

Usually when you have 2 user accounts (regular and admin) in your organization and infrastructure will give only access to your admin account and when you try to open a sharepoint 2013 site it says access denied by default coz you logged in with your regular account by default and SharePoint 2013 dont give option to "sign in as different user" by default. You can use _layouts/closeConnection.aspx?loginasanotheruser=true this extension to get the sign-in pop up window. Hope this helps