title: How to search the contact name with underscore in office 365?
body: <p>I searched contact using office 365 API I got the value. One of the scenario it displayed error message. When I used '_' symbol in request it showed response returned as HTTP error 400.</p>
  
  <p>Eg:
  1)<a href="https://outlook.office.com/api/v2.0/Me/Contacts" rel="nofollow">https://outlook.office.com/api/v2.0/Me/Contacts</a>?$search=james kumar</p>
  
  <p>No error.
  I changed the name james kumar into james_kumar. Now I tried the following query.</p>
  
  <p>2)<a href="https://outlook.office.com/api/v2.0/Me/Contacts" rel="nofollow">https://outlook.office.com/api/v2.0/Me/Contacts</a>?$search=james_kumar
  it showed as,
  Array
  (
      [errorNumber] => 400
      [error] => Request returned HTTP error 400
  )</p>