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Q319384: Pages Do Not Expire as Expected After Web Site Content Change

Article: Q319384
Product(s): Internet Information Server
Version(s): 5.0
Operating System(s): 
Keyword(s): 
Last Modified: 06-AUG-2002

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The information in this article applies to:

- Microsoft Internet Information Services version 5.0 
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SYMPTOMS
========

If you change content on a Web site, the changes do not appear as expected.
Instead, Internet Information Services (IIS) 5.0 shows the old content.

CAUSE
=====

This can occur if HTTP compression is enabled on the Web server. Enabling HTTP
compression introduces a new metabase key named HcCacheControlHeader. The
default value of HcCacheControlHeader is set to max-age=86400 (that is, 86400
seconds). This means that the Web site stays in the cache of the browser for 24
hours.

RESOLUTION
==========

1. On your server, open a command prompt.

2. Change to your <X>:\InetPub\AdminScripts folder, where <X> is the
  drive that you specified for your IIS documents.

3. Run the following command:

  CSCRIPT.EXE ADSUTIL.VBS SET
  W3SVC/Filters/Compression/Parameters/HcCacheControlHeader "max-age=0"

4. Stop and restart the IISAdmin service.

5. Restart the WWW service.

WORKAROUND
==========

If the client refreshes the content (for example, by pressing the F5 key), the
IIS cache is updated and shows the changed content.

STATUS
======

Microsoft has confirmed that this is a problem in the Microsoft products that
are listed at the beginning of this article.

MORE INFORMATION
================

Setting the value of Response.Expires to 0 in the relevant ASP page does not
resolve the issue.


Additional query words:

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Keywords          :  
Technology        : kbiisSearch kbiis500
Version           : :5.0
Issue type        : kbprb

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