DOCUMENT:Q195364 09-OCT-1999 [msnetwork] TITLE :Err Msg: Mcdetect Caused an Invalid Page Fault in Msvcrt40.dll PRODUCT :The Microsoft Network PROD/VER:WINDOWS:2.51 OPER/SYS: KEYWORDS:kberrmsg kbsetup kbmsn ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - The Microsoft Network version 2.51 ------------------------------------------------------------------------------- SYMPTOMS ======== When you connect to MSN, The Microsoft Network, you may receive the following error message: Mcdetect caused an Invalid Page Fault in module Msvcrt40.dll. CAUSE ===== This behavior can occur if any of the following files are missing or damaged: - Mfc40.dll - Msvcrt40.dll - Olepro32.dll RESOLUTION ========== To resolve this issue, follow these steps: 1. Click Start, point to Programs, and then click Control Panel. 2. Double-click Add/Remove Programs. 3. Double-click Microsoft Internet Explorer 4.0, click "Uninstall Internet Explorer 4.0 and all its components," and then click OK. 4. Follow the instructions on the screen to remove Internet Explorer. If you are prompted to restart the computer, do so. 5. Click Start, point to Find, and then click Files Or Folders. 6. In the Named box, type "mfc40.dll msvcrt40.dll olepro32.dll" (without quotation marks), and then click Find Now. 7. In the list of found files, right-click the Mfc40.dll file, and then click Rename. 8. Type "mfc40.old" (without quotation marks), and then press ENTER. 9. In the list of found files, right-click the Msvcrt40.dll file, and then click Rename. 10. Type "msvcrt40.old" (without quotation marks), and then press ENTER. 11. In the list of found files, right-click the Olepro32.dll file, and then click Rename. 12. Type "olepro32.old" (without quotation marks), and then press ENTER. 13. Close the Find: Files Named Mfc40.dll Msvcrt40.dll Olepro32.dll window. 14. Insert the MSN CD-ROM into your CD-ROM drive. Press and hold down the SHIFT key as you insert the CD-ROM to prevent the MSN Setup program from starting automatically. 15. Double-click the My Computer icon on the desktop. 16. Right-click the MSN (CD-ROM drive) icon, and then click Explore. 17. Double-click the Ie401 folder. 18. Double-click the Ie4setup.exe file, and then follow the instructions on the screen to reinstall Internet Explorer 4.0. if you are prompted to restart the computer, do so. Additional query words: msnet msnetwork microsoft-net m.s.n. msiew95 ====================================================================== Keywords : kberrmsg kbsetup kbmsn Technology : kbMSNSearch kbMSN251 Version : WINDOWS:2.51 Issue type : kbprb ============================================================================= 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 1999.