Many a time while developing a web application you may come accross “Server application unavailable”
When you get this error in Windows XP make sure you have given ASPNET user sufficient rights on your physical application folder, it mainly requires read permission.
When you get this error in Windows 2003 server you can right click your virtual directory – permission – grant aspnet user sufficient rights there.
If the above solution doesn’t work here is another alternative,
You could try editing the Machine.config (located in
Look for a key userName=”machine”. If you set it to “SYSTEM”
instead the aspnet_wp.exe runs with a different user (with
Hope this helps