"This Web browser does not support the generation of certificate requests" error in Internet Explorer

Symptoms
Consider the following scenario:
  • The Certificate Services Web Enrollment role service is installed on a Windows Server 2008 R2-based server.
  • You have a client computer that is running Internet Explorer 10 or a later version.
  • You try to access the Certificate Services Web Enrollment page that is hosted on the Windows Server 2008 R2-based server.
In this scenario, the following error is received in Internet Explorer:

This Web browser does not support the generation of certificate requests
Cause
The Browser Version check incorrectly identifies the Internet Explorer version as "IE 1."
Workaround
Supported workarounds for this issue are as follows:
  • Configure compatibility view in Internet Explorer. 
  • Move the Web Enrollment page functionality to Windows Server 2012.
  • Modify the Certsbrt.inc file by replacing lines 44 through 70 with the following content. Certsbrt.inc is located in the following folder:
    %WINDIR%\system32\certsrv\en-us
'' If there is no '.' in the UserAgent string, this will return the next character if any' as the version number. ' We extract the string until a '.' and then convert it' into integer. If -1 is returned from this function then it isn't MSIE 'Function GetInternetExplorerVersionNumber(sHttpUserAgent)    Dim nMSIEGetInternetExplorerVersionNumber = -1     nMSIE = InStr(sHttpUserAgent, "MSIE")    If 0 <> nMSIE Then        numChar = InStr(Mid(sHttpUserAgent, nMSIE + 5), ".") - 1        If -1 = numChar Then ' no '.' in the string           numChar = 1        End If        If nMSIE + 5 + numChar - 1 <= Len(sHttpUserAgent) Then            GetInternetExplorerVersionNumber = CInt(Mid(sHttpUserAgent, nMSIE + 5, numChar))        End If     End IfEnd Function'' We define a Old MSIE based browser' if it has the string MSIE that is followed by a version number that is less than 4' NOTE:' IsOldMSIE = False does not imply MSIE >= 4.'' i.e. Not IsOldMSIE("abc") = True'      Not IsOldMSIE("MSIE") = True'Function IsOldMSIE(sHttpUserAgent)   Dim nMSIE   Dim sMSIEVersion   IsOldMSIE = False   nMSIE = InStr(sHttpUserAgent, "MSIE")   If nMSIE <> 0 AND (nMSIE+5 < Len(sHttpUserAgent)) Then      nVersion = GetInternetExplorerVersionNumber(sHttpUserAgent)      If -1 <> nVersion Then          IsOldMSIE = nVersion < NEW_MSIE_VERSION      End If   End IfEnd Function
More information
Lines 44 through 70 in the unmodified Certsbrt.inc file on the Windows Server 2008 R2-based server are as follows. These are the lines that are to be replaced.

'' We define a Old MSIE based browser' if it has the string MSIE that is followed by a version number that is less than 4' NOTE:' IsOldMSIE = False does not imply MSIE >= 4.'' i.e. Not IsOldMSIE("abc") = True'      Not IsOldMSIE("MSIE") = True'Function IsOldMSIE(sHttpUserAgent)   Dim nMSIE   Dim sMSIEVersion   nMSIE = InStr(sHttpUserAgent, "MSIE")   If nMSIE=0 Then      IsOldMSIE = False   ElseIf nMSIE+5 < Len(sHttpUserAgent) Then      sMSIEVersion = Mid(sHttpUserAgent, nMSIE+5, 1)      IsOldMSIE = CInt(sMSIEVersion) < NEW_MSIE_VERSION   Else      IsOldMSIE = False   End IfEnd Function
Properties

Article ID: 3073944 - Last Review: 06/25/2015 15:14:00 - Revision: 2.0

Internet Explorer 11, Internet Explorer 10, Windows Server 2008 R2 Standard, Windows Server 2008 R2 Enterprise, Windows Server 2008 R2 Datacenter

  • KB3073944
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