DOCUMENT:Q163700 15-MAR-2000 [iis] TITLE :IIS Access Violation for Polygon with More Than 100 Vertices PRODUCT :Internet Information Server PROD/VER:winnt:2.0,3.0 OPER/SYS: KEYWORDS:kbnetwork ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server versions 2.0, 3.0 ------------------------------------------------------------------------------- SYMPTOMS ======== Internet Information Server (IIS) may experience an access violation when it processes client response coordinates for a server side Image Map. The access violation will occur if the region selected is a Polygon with more than 100 vertices defined. CAUSE ===== IIS defines enough space to store 100 vertices for a polygon region; therefore, if more than 100 vertices exist in the image map, IIS attempts to process the additional vertices. An access violation then occurs when the limit of 100 vertices is exceeded. RESOLUTION ========== IIS has been modified to allow 160 vertices and ignore any polygon region defined with more than 160 vertices. STATUS ====== Microsoft has confirmed this to be a problem in Microsoft Internet Information Server versions 2.0 and 3.0. This problem was corrected in the latest Microsoft Windows NT 4.0 U.S. Service Pack. For information on obtaining the service pack, query on the following word in the Microsoft Knowledge Base (without the spaces): S E R V P A C K Additional query words: prodnt access violation iis ====================================================================== Keywords : kbnetwork Technology : kbiisSearch kbiis300 kbiis200 Version : winnt:2.0,3.0 Issue type : kbbug ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2000.