Web sites and Web applications depend on the availability of Internet Information Services (IIS) application pools. IIS application pools in turn depend on the Windows Process Activation Service (WAS). If WAS is not running or errors occur during the startup or shutdown of an application pool, Web sites and Web applications may not be available.

To resolve this issue, you need to fix the problems in the globalModules section of ApplicationHost.Config file.

To configure the globalModules section in ApplicationHost.config:

• Open an elevated Command Prompt window. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.

• Type cd %Windir%\system32\inetsrv\.

• Type appcmd add backup backupName to back up the ApplicationHost.config file. A directory with the backup name that you specify will be created under the %Windir%\system32\inetsrv\backup directory. If you do not specify a name, appcmd will generate a directory name automatically using the current date and time.

• Type cd %Windir%\system32\inetsrv\config

• Type notepad ApplicationHost.config

• In notepad, search for the globalModules section under the system.webServer section.

• Use the article IIS 7: globalModules Element (IIS Settings Schema) as a guide to correct the globalModules section configuration error in the ApplicationHost.config file.

• Save and close the ApplicationHost.config file.