title: HTTP 403 Forbidden SharePoint 2010 CA - only in IE but not FireFox
body: <p>When I tried to access SharePoint CA from the client after the installation I got this error
  "HTTP 403 Forbidden" only when I use IE.
  I tried everything but when I change the browser to Firefox I get the windows authentication popup.</p>
  
  <p>I thought it's a firewall problem or I did something wrong when I install SharePoint but I think it had something to do with IE and the request header.</p>
  
  <p>Any idea?</p>
  
  <pre><code>GET http://srv002:9999/ HTTP/1.1
  Accept: image/jpeg, image/gif, image/pjpeg, application/x-ms-application, application/xaml+xml, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
  Accept-Language: en-US
  User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; InfoPath.3)
  Accept-Encoding: gzip, deflate
  Connection: Keep-Alive
  Host: srv002:9999
  
  
  HTTP/1.1 401 Unauthorized
  Server: Microsoft-IIS/7.5
  SPRequestGuid: 9cfc2a00-39ef-41f6-b89f-d63239b4afb3
  WWW-Authenticate: NTLM
  X-Powered-By: ASP.NET
  MicrosoftSharePointTeamServices: 14.0.0.7106
  X-MS-InvokeApp: 1; RequireReadOnly
  Date: Tue, 04 Feb 2014 07:08:54 GMT
  Content-Length: 0
  Proxy-Support: Session-Based-Authentication
  
  
  
  ------------------------------------------------------------------
  
  GET http://srv002:9999/ HTTP/1.1
  Accept: image/jpeg, image/gif, image/pjpeg, application/x-ms-application, application/xaml+xml, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
  Accept-Language: en-US
  User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; InfoPath.3)
  Accept-Encoding: gzip, deflate
  Connection: Keep-Alive
  Host: srv002:9999
  Authorization: NTLM TlRMTVNTUAABAAAAB4IIogAAAAAAAAAAAAAAAAAAAAAGAbEdAAAADw==
  
  
  HTTP/1.1 401 Unauthorized
  Server: Microsoft-IIS/7.5
  SPRequestGuid: 40ae372c-acba-4800-b684-1a4751169fc3
  WWW-Authenticate: NTLM TlRMTVNTUAACAAAABgAGADgAAAAFgomicjttOyWACKEAAAAAAAAAAIAAgAA+AAAABgGxHQAAAA9TAE0ARgACAAYAUwBNAEYAAQAMAFMAUgBWADAAMAAyAAQAFABzAG0AZgAuAGcAbwB2AC4AcwBhAAMAIgBTAHIAdgAwADAAMgAuAHMAbQBmAC4AZwBvAHYALgBzAGEABQAUAHMAbQBmAC4AZwBvAHYALgBzAGEABwAIAG0GvfZ3Ic8BAAAAAA==
  X-Powered-By: ASP.NET
  MicrosoftSharePointTeamServices: 14.0.0.7106
  X-MS-InvokeApp: 1; RequireReadOnly
  Date: Tue, 04 Feb 2014 07:08:54 GMT
  Content-Length: 0
  Proxy-Support: Session-Based-Authentication
  
  
  
  ------------------------------------------------------------------
  
  GET http://srv002:9999/ HTTP/1.1
  Accept: image/jpeg, image/gif, image/pjpeg, application/x-ms-application, application/xaml+xml, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
  Accept-Language: en-US
  User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; InfoPath.3)
  Accept-Encoding: gzip, deflate
  Connection: Keep-Alive
  Authorization: NTLM TlRMTVNTUAADAAAAGAAYAIAAAAA0ATQBmAAAAAYABgBYAAAADgAOAF4AAAAUABQAbAAAAAAAAADMAQAABYKIogYBsR0AAAAP7McG8zf70CWuneFi3bivi1MATQBGAG0AcwBoAGUAaAByAGkASQBUAC0ATQBTAEgARQBIAFIASQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACYioKaPVYLIWbyJ1KQUIdSAQEAAAAAAABtBr32dyHPAeUi3PfC0+mYAAAAAAIABgBTAE0ARgABAAwAUwBSAFYAMAAwADIABAAUAHMAbQBmAC4AZwBvAHYALgBzAGEAAwAiAFMAcgB2ADAAMAAyAC4AcwBtAGYALgBnAG8AdgAuAHMAYQAFABQAcwBtAGYALgBnAG8AdgAuAHMAYQAHAAgAbQa99nchzwEGAAQAAgAAAAgAMAAwAAAAAAAAAAAAAAAAMAAAMQOsvSwEzn2OuKH9ixJBp/K1q3Jpr4UbW8LcKuweM8kKABAAAAAAAAAAAAAAAAAAAAAAAAkALABIAFQAVABQAC8AcwByAHYAMAAwADIALgBzAG0AZgAuAGcAbwB2AC4AcwBhAAAAAAAAAAAAAAAAAA==
  Host: srv002:9999
  
  
  HTTP/1.1 302 Found
  Content-Type: text/html; charset=utf-8
  Location: http://srv002:9999/_layouts/AccessDenied.aspx?Source=http%3A%2F%2Fsrv002%3A9999
  Server: Microsoft-IIS/7.5
  SPRequestGuid: 69b66e7a-3211-4023-8abb-3dc9847c6e86
  Persistent-Auth: true
  X-Powered-By: ASP.NET
  MicrosoftSharePointTeamServices: 14.0.0.7106
  X-MS-InvokeApp: 1; RequireReadOnly
  Date: Tue, 04 Feb 2014 07:08:54 GMT
  Content-Length: 196
  
  
  
  ------------------------------------------------------------------
  
  GET http://srv002:9999/_layouts/AccessDenied.aspx?Source=http%3A%2F%2Fsrv002%3A9999 HTTP/1.1
  Accept: image/jpeg, image/gif, image/pjpeg, application/x-ms-application, application/xaml+xml, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
  Accept-Language: en-US
  User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; InfoPath.3)
  Accept-Encoding: gzip, deflate
  Connection: Keep-Alive
  Authorization: NTLM TlRMTVNTUAABAAAAB4IIogAAAAAAAAAAAAAAAAAAAAAGAbEdAAAADw==
  Host: srv002:9999
  
  
  HTTP/1.1 401 Unauthorized
  Server: Microsoft-IIS/7.5
  SPRequestGuid: b66fc0f0-0a2c-4172-81a8-1c9e372ca6ba
  WWW-Authenticate: NTLM TlRMTVNTUAACAAAABgAGADgAAAAFgomiurTeqPQpMIgAAAAAAAAAAIAAgAA+AAAABgGxHQAAAA9TAE0ARgACAAYAUwBNAEYAAQAMAFMAUgBWADAAMAAyAAQAFABzAG0AZgAuAGcAbwB2AC4AcwBhAAMAIgBTAHIAdgAwADAAMgAuAHMAbQBmAC4AZwBvAHYALgBzAGEABQAUAHMAbQBmAC4AZwBvAHYALgBzAGEABwAIABfJwfZ3Ic8BAAAAAA==
  X-Powered-By: ASP.NET
  MicrosoftSharePointTeamServices: 14.0.0.7106
  X-MS-InvokeApp: 1; RequireReadOnly
  Date: Tue, 04 Feb 2014 07:08:54 GMT
  Content-Length: 0
  Proxy-Support: Session-Based-Authentication
  
  
  
  ------------------------------------------------------------------
  
  GET http://srv002:9999/_layouts/AccessDenied.aspx?Source=http%3A%2F%2Fsrv002%3A9999 HTTP/1.1
  Accept: image/jpeg, image/gif, image/pjpeg, application/x-ms-application, application/xaml+xml, application/x-ms-xbap, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, */*
  Accept-Language: en-US
  User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; WOW64; Trident/5.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E; InfoPath.3)
  Accept-Encoding: gzip, deflate
  Connection: Keep-Alive
  Authorization: NTLM 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
  Host: srv002:9999
  
  
  HTTP/1.1 403 Forbidden
  Cache-Control: private
  Transfer-Encoding: chunked
  Content-Type: text/html; charset=utf-8
  Server: Microsoft-IIS/7.5
  SPRequestGuid: ac436a2d-eadc-4a98-a382-be0432840d60
  X-AspNet-Version: 2.0.50727
  Set-Cookie: ASP.NET_SessionId=yxptiwufledck2452zqacr2f; path=/; HttpOnly
  Persistent-Auth: true
  X-Powered-By: ASP.NET
  MicrosoftSharePointTeamServices: 14.0.0.7106
  X-MS-InvokeApp: 1; RequireReadOnly
  Date: Tue, 04 Feb 2014 07:08:54 GMT
  
  
  
  ------------------------------------------------------------------
  </code></pre>