Problems with Adobe Acrobat 5.0 After You Install URLScan (316864)


The information in this article applies to:

  • Microsoft Internet Information Server 4.0
This article was previously published under Q316864

SYMPTOMS

You may receive the following error messages in Microsoft Internet Explorer after you install URLScan:
File does not begin with '%PDF-'.
-or-
The file is damaged and cannot be repaired

CAUSE

In the Urlscan.ini file, RemoveServerHeader is set to 1.

RESOLUTION

The update for this problem is included in the "MS02-018: April 2002 Cumulative Patch for Internet Information Services". For additional information about how to obtain this patch, click the article number below to view the article in the Microsoft Knowledge Base:

319733 MS02-018: April 2002 Cumulative Patch for Internet Information Services

WORKAROUND

To work around this problem, set RemoveServerHeader to 0.

STATUS

Microsoft has confirmed that this problem may cause a degree of security vulnerability in Microsoft Internet Information Server 4.0.

MORE INFORMATION

Permitted values for RemoveServerHeader are 0 and 1. If the value is 1, URLScan removes the server header on all responses. If the value is 0, URLScan does not remove the server header on all responses. The default value for RemoveServerHeader is 0. Note that this feature is only available if URLScan is installed on IIS 4.0 or later.

REFERENCES

For additional information about the URLScan security tool, click the article number below to view the article in the Microsoft Knowledge Base:

307608 INFO: Availability of URLScan Security Tool

For more information, see the following Knowledge Base article:

313489 You Can Place Content Headers in the Body of a Response If an ISAPI Filter Is Installed

Modification Type:MajorLast Reviewed:10/2/2003
Keywords:kbbug kbfix kbQFE KB316864
©2003 Microsoft Corporation. All rights reserved.