To change the application pool .NET CLR version to v4.0.30319, complete the following steps.
- In Internet Information Server (IIS) Manager, open Sites, and then select the Web Verifier application.
- In the right pane, click Basic Settings.
- In the Edit Application dialog box, from the Application Pool field, note the pool name and then click OK.
- In the left pane, select Application Pools.
- In the middle pane, right-click the Web Verifier application pool name and then click Basic Settings.
- In the Edit Application Pool dialog box, from the .NET CLR version list, select .NET CLR Version v4.0.30319 and then click OK.