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A comment on IE7 users, we need to talk…. Parent comment

Re:IE7 users, we need to talk… by Erwin on Wednesday January 29, 2014 @04:39AM (#7142936)
Note that the compat mode may mean that you are miscounting IE8 users in IE7 compat mode as IE7 if you are doing a naive user-agent detection (I only mention it because I did and started blocking IE8 users!)

Both will emit "MSIE 7.0" in the user-agent, but IE8 will have Trident/4 while IE7 lacks any such token. MSIE 11 does away with "MSIE" in the user-agent altogether.

There's a X-UA-Compatible header (and meta variable) you can emit to ask for no compat checks.

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Re:IE7 users, we need to talk… by felickz2 on Wednesday January 29, 2014 @10:20AM (#7144297)
IE11 in compatibility mode does indeed keep the MSIE value... here is mine:

User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E)

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