An error occurred on the server when processing the url. please contact the system administrator.

Resolved An error occurred on the server when processing the url. please contact the system administrator classic Asp iis
Due to iis setting the website doesnt show detailed error message which some times becomes difficult to debug

1) go to run  (press CTRL + R)
2) Type inetmgr
3) press Enter
4) Click virtual directory Tab then click Configuration button

5) Click Debugging Tab and select Text error message to client.and click Apply and oK