imageHere’s a new Knowledge Base article we published. This one talks about an issue where an Internet browser returns error code 37 when accessing a site via Microsoft Forefront Unified Access Gateway using HTTP 1.0.

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Symptom

Consider the following scenario:

1. An Apache-based application is published by Microsoft Forefront Unified Access Gateway 2010 (UAG) using the "Other Web Application" template.
2. A user attempts to access the application from a browser that use HTTP/1.0.

In this scenario, the backend application will reply back with “connection: close” and will terminate the SSL connection with close_notify. UAG, instead of sending that reply back to the client, will either send back a 500.htm error or Error 37: "An unknown error occurred while processing the certificate".

Cause

UAG does not support a client browser sending HTTP 1.0 with an Apache backend when the Apache server is setup to use HTTP 1.0.

Resolution

To work around this issue, enable HTTP 1.1 on the client browsers.

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For the most current version of this article please see the following:

2678886 - Browser returns error code 37 when accessing an Apache site via Unified Access Gateway using HTTP 1.0

J.C. Hornbeck | Knowledge Engineer | Management and Security Division

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