Using IIS ARR 3.0 On Windows Server 2012R2 As A Reverse Proxy For Skype for business 502 error after updating host file

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  follow these 

  https://blogs.technet.microsoft.com/saleesh_nv/2015/02/18/lync-2013-arr-reverse-proxy-troubleshooting-tips/

  https://blogs.technet.microsoft.com/nexthop/2013/02/19/using-iis-arr-as-a-reverse-proxy-for-lync-server-2013/

  For General ARR Proxy issues you can refer these

  https://blogs.msdn.microsoft.com/chiranth/2014/08/03/application-request-routing-part-2reverse-proxy-and-troubleshooting-arr-urlrewrite-issues/

  http://blogs.iis.net/richma/winhttp-tracing-options-for-troubleshooting-with-application-request-routing

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  Regards, Rajukb | MCSE (Communication ), MCSA (o365) ,Certified "Lync server 2013 depth support engineer"| This posting is providedwith no warranties and confers no rights. If my reply answers your question please mark as answer/helpful if its helpful.

  
  

  • Edited by RajuKB_MCSE (Communication) Monday, July 4, 2016 6:54 PM
  • Proposed as answer by Liinus Wednesday, July 6, 2016 11:33 AM
  • Marked as answer by Niko.Cheng Tuesday, July 26, 2016 1:49 AM

  Monday, July 4, 2016 6:53 PM
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  Hi Dean Maher,

  You could refer to the links that Raju provided to check the IIS Proxy settings.

  Additionally, here is a similar case for your reference

  https://social.technet.microsoft.com/Forums/lync/en-US/20d138f8-936b-4504-b4ca-0961efaf7773/receiving-http-502-badgateway-response-error-when-testing-lync-2013-using-iis-arr?forum=lyncdeploy

  The following link is about troubleshooting tips for IIS ARR

  http://www.b4z.co.uk/troubleshooting-iis-arr-bad-gateway-timeout-issues.html

  http://www.iis.net/learn/extensions/troubleshooting-application-request-routing/troubleshooting-502-errors-in-arr

  Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.

  Best regards,

  Alice Wang

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

  • Proposed as answer by Liinus Wednesday, July 6, 2016 11:33 AM
  • Edited by Alice-Wang Friday, July 8, 2016 7:45 AM
  • Marked as answer by Niko.Cheng Tuesday, July 26, 2016 1:49 AM

  Tuesday, July 5, 2016 9:46 AM