When attempting to access a NetQoS product's webpage, "Service Unavailable" is displayed with no other information. A W3SVC-WP error may also be displayed in the Applications Log of the Event Viewer. For information about this issue, please see the following Microsft KB article. The Details and Resolution section of this article contain excerpts from the Micrsoft article. http://support.microsoft.com/?kbid=896286
You receive a 2269 event message when you try to start a worker process in IIS 6.0 Symptoms When you try to start a worker process (W3wp.exe) in Microsoft Internet Information Services (IIS) 6.0, you may receive a message that is similar to the following in the Application log in Event Viewer: Event Type: Error Event Source: W3SVC-WP Event Category: None Event ID: 2269 User: N/A Computer: ServerName Description: The worker process failed to initialize the http.sys communication or the w3svc communication layer and therefore could not be started. The data field contains the error number. The error number in the data field is 0000: 80070057. You may also receive an error message that is similar to the following when you try to view a Web page: Service Unavailable Cause This issue can occur if the following conditions are true: The worker process is configured to use an identity that is different from Local System. The Everyone group and the User group do not have the Bypass Traverse Checking user right. By default, the Everyone group and the User group have this user right.
To resolve this issue, restore the Bypass Traverse Checking user right for the Everyone group and the User group. To do this, follow these steps: Click Start, click Run, type gpedit.msc, and then click OK. Expand Computer Configuration, expand Windows Settings, expand Security Settings, expand Local Policies, and then expand User Rights Assignment. Right-click Bypass traverse checking, and then click Properties. Click Add User or Group. Type Users;Everyone, and then click OK. If you receive a message that an object named "Users" cannot be found, click Object Types, click to select the Groups check box, and then click OK two times. Start the worker process in IIS.