After you install or upgrade the printer driver on a Windows Vista-based or on a Windows Server 2008-based computer, some temp files that have a size of 0 bytes are created in the following folder:

%SystemRoot%\system32\spool\drivers\w32×86\3

Note: The temp files have a name, such as BUD.tmp. The placeholder represents a series of numbers.

Additionally, these temp files are not deleted automatically.

This problem may occur if the newly installed or upgraded printer driver includes the Unidrv.dll driver for Windows Vista or for Windows Server 2008.

When you try to add a WebReference object to a Web service in the Microsoft .NET Framework 2.0, files are created by the Web service discovery. The Web service discovery is handled by the DiscoveryClientProtocol class. By using the Web service discovery process, Web service clients, such as Microsoft Visual Studio 2005, learn that an XML Web service exists. Web service clients also learn where to find the XML Web service’s description document. The Web service clients then save the discovered documents to the disk by using the WriteAll method. For example, the discovered documents may be .xsd schema files or service descriptions. At the end of the process, the client deletes the files.

For security reasons or in other situations, you may want to change the location of these files in the temp folder. An update is available for the .NET Framework 2.0. This update lets you configure the location of the temp folder by using the application’s Machine.config file. You can configure the location of the temp folder by using code that resembles the following.

<system.xml.serialization>
    <xmlSerializer tempFilesLocation="<Full path of the temp folder>"/>
  </system.xml.serialization>

When you try to install Adobe Reader 8 on a Windows Vista-based computer, you receive the following error message:

The Temp folder is on a drive that is full or is inaccessible. Free up space on the drive or verify that you have write permission on the Temp folder.

When you install Adobe Reader 8 on Windows Vista you see the error message, “The Temp folder is on a drive that is full or is inaccessible. Free up space on the drive or verify that you have write permission on the Temp folder.”