Microsoft KB Archive/247805

= Network Provider Prompts for Logon Credentials Unexpectedly =

Article ID: 247805

Article Last Modified on 1/27/2007

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APPLIES TO


 * Microsoft Windows 95
 * Microsoft Windows 98 Standard Edition
 * Microsoft Windows 98 Second Edition

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This article was previously published under Q247805



SYMPTOMS
When you enter your credentials into the Windows Logon prompt, and then click OK, you may be prompted to enter your credentials again to log on to another provider such as the Microsoft Netware client even though you synchronized your passwords and enabled password caching.



CAUSE
This problem can occur in the following scenarios:
 * You log on to a remote network using Dial-Up Networking and you are prompted by the Microsoft Netware client to enter your credentials.
 * You suspend and resume your computer and you are prompted by the Microsoft Netware client to enter your credentials.
 * You log off the Microsoft Netware client and run Winipcfg.exe to release or renew your IP address.

When you register a new LANA on the computer a device change message is broadcast throughout the computer. The Multiple Provider Router (MPR) requests all providers log on by calling the NpLogon API. In certain instances, the password passed to each provider's NpLogon function may be encrypted.



RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix should have the following file attributes or later:   Date        Time     Version   Size     File name    Platform ---  03/13/2000  12:24pm  4.00.964  127,488  Mprserv.dll  Windows 95 02/14/2000 09:38pm  4.10.2002 134,656  Mprserv.dll  Windows 98 02/14/2000 09:15pm  4.10.2224 134,656  Mprserv.dll  Windows 98 Second Edition

Important note for users of Windows 95: you must first obtain and apply the update described in the following Microsoft Knowledge Base article:

165402 Windows 95 Update to Encrypt Passwords in Memory

To work around this issue, you can enter the logon credentials again.



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



MORE INFORMATION
For additional information about problems that this update corrects, click the article number below to view the article in the Microsoft Knowledge Base:

241052 Message Box Displays 'Browse' When Password Synchronization Does Not Succeed

For additional information about Windows 98 and Windows 98 Second Edition hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

206071 General Information About Windows 98 and Windows 98 Second Edition Hotfixes

For additional information about Windows 95 hotfixes, click the article number below to view the article in the Microsoft Knowledge Base:

161020 Implementing Windows 95 Updates

Keywords: kbhotfixserver kbqfe kbnetwork kbprb kbqfe KB247805

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