Solution:
First make sure you have added the user as administrator, who is trying to open visual studio as administrator.
It should resolve the issue.
If still you are getting the prompting for password
Login to your system as local administrator.
Go to Control Panel
Click on User Accounts
Click on User Accounts
Click on Change User Account Control Settings
You will get a prompt
Scroll down the bar up to Never notify
Ok
Restart the system
Now try, your problem should resolve.
