TreeView controls cannot be expanded in a deployed Web Forms target if the application runs in an IIS 7 application pool in Integrated mode. However, the default application pool (PBAppPool) created for Web Forms applications uses Integrated mode by default. Integrated mode also causes issues with the Static Hyperlink control and with currency mask conversions.
Web Forms applications that have these issues must run in an application pool that uses the Classic mode. For more information, see “Additional configuration requirements for Windows Vista” in Chapter 1 of Deploying Applications and Components to .NET. [CR 475256, CR 472907, CR 488647]
