A lot of software requires a minimum browser requirement. See below on how to check which version you are currently using.

• Internet Explorer
  http://windows.microsoft.com/en-us/internet-explorer/which-version-am-i-using#ie=other
  
  
• Firefox
  https://support.mozilla.org/en-US/kb/find-what-version-firefox-you-are-using
  
  
• Google Chrome
  https://support.google.com/chrome/answer/95414?hl=en
  
  
• Safari
  https://pchelp.ricmedia.com/check-apple-safari-browser-version-mac/