Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I currently see the following browser information from a user:

Mozilla/4.0 (  
  MSIE 8.0;   
  Windows NT 6.1;   
  Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ;   
  .NET CLR 2.0.50727; 
  .NET CLR 3.5.30729; 
  .NET CLR 3.0.30729; 
  Media Center PC 6.0; 

From the above, it looks like the user is using Internet Explorer 8.0 with MSIE 8.0. Windows NT 6.1 means Windows 7. How is that combination possible? I thought Win7 only supports IE9?

share|improve this question
up vote 1 down vote accepted

NT 6.1 = Windows 7 and IE8 = Internet Explorer 8 which is the default IE version in Windows 7. IE9 was shipped later.

share|improve this answer

Go to, enter that useragent string and click the analyze button. It will tell you everything about that useragent string with lots of links to external references.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.