Office 365 Hybrid Issue (with Exchange 2010) Non Existent Proxy Issue

Hi All,

I am experiencing a strange issue and I am wondering if anyone can point me in the right direction.

I am looking at a problem with an Office 365 Hybrid - Exchange 2010 onsite server.

We did not set this hybrid up - and they are having some issues with it.

As part of my testing I ran the "Test-FederationTrust -UserIdentity administrator -v"

This returned some errors. 

VERBOSE: [06:13:32.667 GMT] Test-FederationTrust : Failed to retrieve Federation Metadata from the Microsoft Federation
Gateway. This operation will be retried in a few seconds. Last error: System.Net.WebException: Unable to connect to
the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did
not properly respond after a period of time, or established connection failed because connected host has failed to
respond 10.1.1.8:8080

This tells me that Exchange is trying to communicate with Microsoft Online via a proxy server at 10.1.1.8:8080 - this proxy server has not existed on this network for some time.

Digging around I found that a proxy had been set under the Exchange Object and removed it using the command "Set-ExchangeServer -Identity  -InternetWebProxy $null".

The Get-ExchangeServer now lists no InternetWebProxy.

When I run the test "Test-FederationTrust -UserIdentity administrator -v" now, I see its trying to connect using another proxy server (which has not been around for even longer)

VERBOSE: [06:13:32.667 GMT] Test-FederationTrust : Failed to retrieve Federation Metadata from the Microsoft Federation
Gateway. This operation will be retried in a few seconds. Last error: System.Net.WebException: Unable to connect to
the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did
not properly respond after a period of time, or established connection failed because connected host has failed to
respond 10.1.1.1:8080

  1. I have confirmed there is no proxy set in IE
  2. I have dug through and removed all references to this proxy server in the registry
  3. I have configured there is no 'wpad' record in DNS and there are no auto proxy settings in any DHCP servers
  4. I have confirmed that the "netsh winhttp show proxy" returns :

Current WinHTTP proxy settings:

Direct access (no proxy server).

Can someone suggest where else Exchange would be getting the proxy settings and the approprate commands to remove the proxy setting ?

Ta.

February 13th, 2015 4:39am

Hi,

Just in case there are any steps missing, shall we double confirm with the following steps:

1) Disable "Automatically Detect Settings" in IE

2) Completely deleted 3. Completely Delete HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections\DefaultConnectionSettings

3) Completely Deleted HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad

4) Reboot machine and retest creating federation trust

Thanks,

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February 15th, 2015 9:47pm

Hi,

Is there any update on this thread?

Thanks,

Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com

 

 

February 17th, 2015 10:02pm

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