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When you try to connect a Windows Vista-based computer to a network printer whose name is not a valid Universal Naming Convention (UNC) path, the connection fails.
This problem affects some third-party printers.If a third-party printer provider does not use a UNC path to name a printer, you cannot connect the computer to the printer.
This problem occurs because of a design change in Windows Vista.
Windows operating systems use the AddPrinterConnection function to add a connection to a printer on a network. In Windows Vista, a check in this function makes sure that the printer name is a valid UNC path.
However, the printer name may not be a UNC path. For example, you can also name the printer by using a Uniform Resource Identifier (URI) such as "ipp://220.127.116.11/ipp". However, because of the new check in Windows Vista, the connection fails even if the URI is valid.
Service pack information
To resolve this problem, obtain the latest service pack for Windows Vista. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
935791 How to obtain the latest Windows Vista service pack
The following files are available for download from the MicrosoftDownload Center:
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:
119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.
No prerequisites are required.
You have to restart the computer after you apply this update.
Update replacement information
This update does not replace any other updates.
To use one of the updates in this package, you do not have to make any changes to the registry.
The English version of this update 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 item in Control Panel.