Question : Why do I get "HTTP 500" error (or "(DLL) initialization routine failed") in my browser?
Answer :This is because if you have the /3GB boot switch enabled, the ASP.NET worker process (Aspnet_wp.exe) does not start. To create and set the "ASPNETENABLE3GB" environment variable as mentioned in the above article, right click MyComputer ->Properties->Advanced > Environment Variables > System variables > New. Add the variable name in the top text box and the value in the lower textbox.