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Common problem: Event 23002 unable to decompress

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Common problem: Event 23002 unable to decompress - 3.Oct.2006 2:46:00 PM

PsYteAk

Posts: 16
Joined: 28.Jun.2005
From: Sweden
Status: offline

Hi have seen a common problem on two different ISA 2004 standard servers.
The one I am looking at right now had it from the 13: e September and its a warning that appears in the application log 10-20 times / day in a environment with 150 surfing users. The users are not reporting any errors but it is a disturbing log.
The http-compression is not enabled (default settings from an installation), and there is no use of proxy.

The eventlog look like this:

Event Type: Warning
Event Source: Microsoft ISA Server Web Proxy
Event Category: None
Event ID: 23002
Date:  2006-10-03
Time:  13:42:03
User:  N/A
Computer: BJB-S003
Description:
ISA Server was unable to decompress a response body from /query?stq=0&q=seriepersson&what=se because the response was compressed by the iso-8859-1 method, which is not supported by ISA Server. This happens when a Web server is configured to supply responses compressed by the iso-8859-1 method regardless of the type of compression requested.
If you want ISA Server to block such responses, configure the policy rule's HTTP policy to block the Content-Encoding header in responses. Otherwise, such responses will be forwarded without decompression to the client and can be cached.
You can cancel or reduce the frequency of the alert generated by this event in ISA Server Management.
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Does any one knows why this appears and how i should do to make it stop?

< Message edited by PsYteAk -- 3.Oct.2006 2:57:43 PM >