An inexplicable error in IIS server application unavailable

application|iis|server| Error

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 is found in the application Event log of the Web server. Please review this log entry to discover what caused this error to occur.

When debugging, because of a problem with an SQL statement, after modifying the error, the result is IIS to this error .....

Of course, I tried to refresh, but it was almost futile. No way, we have to restart IIS, the result is this!

This is still the error after restarting the computer. This is depressing.

After viewing the log, I found that the last log has a lot of spaces (should be, because the log is text). Like it was written in a dead loop. But restart the computer should be able to restore AH, delete the log, and then run, the result is the same!

Later, with the help of colleagues, I found a service in services stopped. After you reopen the service ASP.net state Service, IIS is normal.

Do not understand why the program after the error, the service to stop, restart IIS and the computer does not load this service, depressed ... Must be started manually.

[Correction: Wednesday, March, 2006 3:41:18 PM]

Maybe it's an accident, and IIS running in the afternoon is still a mistake. Later, after several checks, found no relationship with IIS (I also reinstalled IIS, faint, really a fool)! After a few hours of thinking, and finally put the problem to write their own pieces of code! As a result, a stack overflow error was found. Faint, why. NET reported errors are run-time debugging errors! And the logs are also a lot of questions about. NET DCOM errors:

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 is modified using the Component Services administrative tool.

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

In the beginning was confused by these lines of error, the result of a few hours wasted.