The Internet Information Services (IIS) Windows Process Activation Service (WAS) configuration manager manages configuration for the application pools and protocol adapters that it maintains. If WAS encounters problems when it reads configuration or reacts to configuration change notifications, configuration changes for the entities it manages may not be processed.
Stop and restart WAS
If a configuration change has to take effect immediately, stop and restart the Windows Process Activation Service (WAS). Stopping WAS will also stop the World Wide Web Publishing Service (W3SVC) if W3SVC is running. Thus, you may also have to start W3SVC.
To stop and restart WAS:
Open an elevated Command Prompt window. Click Start, point to All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.
At the command prompt, type net stop was /y.
At the command prompt, type net start was.
To restart W3SVC, from the command prompt, type net start w3svc. Also, start any other services that were stopped when WAS was shut down.