Server Application Error

Don’t know why suddenly when I run an ASP file from my local IIS, I got an error message saying

Server Application Error

The server has encountered an error while loading an application during the processing of your request. Please refer to the event log for more detail information. Please contact the server administrator for assistance.

So, I googled about it and tried out one of the solutions suggested. I went to DOS command and type iisreset.

IISRESET
Then, I went back to my IIS to browse the ASP file and it works now!