Article ID: 181228
Article Last Modified on 9/22/2005
APPLIES TO
- Microsoft Internet Explorer 4.01 128-Bit Edition
- Microsoft Internet Explorer 4.01 128-Bit Edition
- Microsoft Internet Explorer 4.01 128-Bit Edition
- Microsoft Internet Information Server 4.0
This article was previously published under Q181228
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 6.0 running on Microsoft Windows Server 2003. IIS 6.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:
SYMPTOMS
When you connect an Internet Explorer (IE) version 4.01 to a Microsoft
Internet Information Server (IIS) 4.0, and the IE 4.01 client attempts to
download a file from the IIS 4.0 system via a Web page, the download may
fail with the following error message:
The downloaded file is not available. This could be due to your
Security or Language settings or because the server was unable to
retrieve the requested file.
CAUSE
This is specific to IIS 4.0 and IE 4.01. When the Internet Information
Server 4.0 computer responds to the IE 4.01 client, the IIS 4.0 system
responds with a specific HTTP header response that causes the IE 4.01
client to fail when attempting a file download:
- HTTP/1.1 200
- Cache-control: private
- application/x-unknown
IIS 4.0 supports HTTP/1.1 200 by default, so it always sends this
information to the IE 4.01 client. Also, IIS 4.0 sets the Cache-control
directive to private by default. If the requested URL has no associated
MIME type, then all three conditions are met, and the IE 4.01 client
fails with the error message above.
RESOLUTION
To resolve this problem, upgrade to Internet Explorer 4.01 Service Pack 1
or later. For information about obtaining a later version of Internet
Explorer, visit the following Microsoft Web site:
STATUS
Microsoft has confirmed this to be a problem in Internet Explorer 4.01
build 2106.
A supported fix is now available, but has not been fully regression-tested
and should be applied only to systems experiencing this specific problem.
Contact Microsoft Technical Support for more information.
Additional query words: ierelease
Keywords: kbbug kbqfe kbhotfixserver KB181228