An inexplicable IIS error -- server application unavailable

Server application unavailable

The Web application you are attempting to access on this web server is currently unavailable. Please hit the "refresh" button in your web browser to retry your request.

Administrator note:An error message detailing the cause of this specific request failure can be found in the application event log of the Web server. Please review this log entry to discover what caused this error to occur.

During debugging, because an SQL statement has a problem, after the modification is incorrect, IIS will return this error .....

Of course, I tried to refresh, but it was almost futile. No way, you have to restart IIS. The result is still like this!

This error persists after the computer is restarted. This is depressing.

Check the log and find that there are many spaces in the last log (it should be because the log is text ). It is written in an endless loop. However, after the computer is restarted, it should be able to recover, delete the log, and run again. The result is the same!

With the help of my colleagues, I found a service in services stopped. After the service Asp.net state service is re-opened, IIS will be normal.

Why?ProgramWhen an error occurs, stop the service and restart IIS and the computer to load the service... Must be started manually.

[Correction: Wednesday, March 22,200 6 3:41:18]

It may have been an accident. In the afternoon, IIS still encountered such an error. After several checks, I found that it has nothing to do with IIS (I have re-installed IIS, so it's a dumb )! After several hours of thinking, I finally put the problem into my own paragraphs.CodeOn! It is a stack overflow error. Why is it that the error reported by. Net is a debugging error during running! In addition, the log records a lot of DCOM errors related to. Net:

The application-specific permission settings do not grant local activation permission for the COM server application with CLSID
{73b25ffd-f501-437b-8b11-7f0de383964f}
To the user WEBB-COUNTRY-WU \ ASPnet Sid (S-1-5-21-1343024091-113007714-725345543-1010). This security permission can be modified using the component services administrative tool.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

At the beginning, I was confused by these errors, and the result was a waste of several hours.