DOCUMENT:Q224190 20-MAY-2002 [iis] TITLE :ASP May Leak Memory in Response.CacheControl Method PRODUCT :Internet Information Server PROD/VER:winnt:4.0 OPER/SYS: KEYWORDS:kbWinNT400sp5fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you use the ASP Response CacheControl method from an ASP page, ASP may leak memory. RESOLUTION ========== To resolve this problem, obtain the latest service pack for Windows NT 4.0 or the individual software update. For information on obtaining the latest service pack, please go to: - http://www.microsoft.com/Windows/ServicePacks/ -or- - Q152734 How to Obtain the Latest Windows NT 4.0 Service Pack For information on obtaining the individual software update, contact Microsoft Product Support Services. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS This hotfix has been posted to the following Internet location as Fix575i.exe (x86) and Fix575a.exe (Alpha): ftp://ftp.microsoft.com/bussys/IIS/iis-public/fixes/usa/ASP/asp-fix575/ STATUS ====== Microsoft has confirmed this to be a problem in Internet Information Server version 4.0. This problem was first corrected in Windows NT version 4.0 Service Pack 5. MORE INFORMATION ================ To test whether or not your system has this problem, monitor the Inetinfo process in Performance Monitor. Set up Performance Monitor to monitor the Inetinfo process using the counters for private bytes. Monitor the Inetinfo process for a period of time to get a baseline reading, and then create an ASP file with the following lines: Response.Expires = 0 Response.Cachecontrol = "private" After you add these lines to the ASP file and then execute the ASP file on the IIS computer continuously, the private bytes counter will rise accordingly. Additional query words: 4.00 ====================================================================== Keywords : kbWinNT400sp5fix Technology : kbiisSearch kbiis400 Version : winnt:4.0 Hardware : ALPHA x86 Issue type : kbbug Solution Type : kbfix ============================================================================= 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 2002.