Microsoft KB Archive/306495

= IBM ThinkPad Modem Does Not Work After You Upgrade from Windows NT 4.0 to Windows XP Professional =

Article ID: 306495

Article Last Modified on 10/18/2001

-

APPLIES TO


 * Microsoft Windows XP Professional

-



This article was previously published under Q306495



SYMPTOMS
After you upgrade your IBM ThinkPad computer from Microsoft Windows NT 4.0 Workstation to Windows XP, the modem may not work, even though the modem appears to be working properly in Device Manager.



RESOLUTION
To work around this problem:
 * 1) Search for the Mwwdmhlp.dll file. To search for a file, click Start, click Search, and then follow the instructions on the screen.
 * 2) Rename the Mwwdmhlp.dll file to Mwwdmhlp.old. To rename a file, right-click it, click Rename, type the new name, and then press ENTER.
 * 3) Restart your computer so that Windows System File Protection can replace the original Windows NT 4.0 file with a copy from the system catalog.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.

Additional query words: sfp

Keywords: kbui kbprb KB306495

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.