Google Ad sense sign up error

Problem:

Error
We apologize for the inconvenience, but we are unable to process your request at this time. Our engineers have been notified of this problem and will work to resolve it.

Solution:

This problem occurs when you retry same thing again and again. So you need to sign out from the google account reopen the browser possibly open Internet Explorer and clear cookies and cache then try to sign up again. It will work.