FIX: The WNetAddConnection2 function does not send the correct default password when the IpPassword parameter is NULL

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Microsoft ended support for Windows XP on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

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If the lpPassword parameter of the WNetAddConnection2 function is NULL, the WNetAddConnection2 function does not send the correct default password. The password is associated with the user name that is specified by the lpUserName parameter for a World Wide Web Distributed Authoring and Versioning (WebDAV) communication.

Note The Server Message Block (SMB) redirector functions correctly with a specified user name and a NULL password.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


You must have Windows XP Service Pack 1 (SP1) or Windows XP SP2 installed before you apply this hotfix.

Restart requirement

You need restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.
Windows XP SP1 x86-based versions
File nameFile versionFile sizeDateTimePlatform
Windows XP SP2 x86-based versions
File nameFile versionFile sizeDateTimePlatform
To work around this problem, call the WNetAddConnection2 function by using the correct password in the lpPassword parameter.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
More information
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
For more information about the WNetAddConnection2 function, visit the following Microsoft Web site:
net use

Article ID: 901155 - Last Review: 01/16/2015 09:05:04 - Revision: 4.0

Microsoft Windows XP Professional

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