Error Code: 502 Proxy Error. The ISA Server denied the specified Uniform Resource Locator (URL). (12202)

By | May 24, 2014

Explanation: There is a problem with the page you are trying to reach and it cannot be displayed.

Try the following:
Refresh page: Search for the page again by clicking the Refresh button. The timeout may have occurred due to Internet congestion.
Check spelling: Check that you typed the Web page address correctly. The address may have been mistyped.
Access from a link: If there is a link to the page you are looking for, try accessing the page from that link.
If you are still not able to view the requested page, try contacting your administrator or Helpdesk.

Technical Information (for support personnel)
Error Code: 502 Proxy Error. The ISA Server denied the specified Uniform Resource Locator (URL). (12202)
IP Address: x.x.1.1
Date: 2009/06/21 08:15:40 [GMT]
Server: esg-isa-01.esgnet.lan
Source: proxy

The above problem was encountered when web browser clients (FWC) that are located behind Microsoft Internet Security and Acceleration (ISA) Server 2006 try to access internal wordpress web sites on Linux server running Fedora.

Temp Solution:

ISA Server 2006 SE – Click Start – Run – regedit

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W3Proxy\Performance\Parameters\

Create the following new entry:Entry name: IgnoreMimeCheckForZeroContentLength
Type: DWORD
Value: 1