SharePoint - 500 INTERNAL SERVER ERROR

Question

If I want to browse to my site address i get this message: 500 INTERNAL SERVER ERROR

this is what i see in event viewer:

The World Wide Web Publishing Service (WWW Service) did not register the URL prefix http://*:80/ for site 1. The necessary network binding may already be in use. The site has been disabled. The data field contains the error number.

Answer 1

Sounds like your IIS bindings are screwed.

Run the SharePoint Configuration Wizard - it'll reconfigure the IIS web application for your to the SharePoint Web App configuration that it knows about.

Answer 2

Check here in your file server location

C:\inetpub\wwwroot\wss\VirtualDirectories\webapplication

restore previous web.config file and iis reset then check...........

Answer 3

Invalid IIS configuration for your Web.

Go to IIS, select your Site at the left part of window, double click Authentication under Features View and check your configuration.

Anonymous Authentication - Disabled    
ASP.NET Impersonation    - Enabled 
Basic Authentication     - Disabled 
Digest Authentication    - Disabled
Forms Authentication     - Enabled
Windows Authentication   - Enabled