Server Application Unavailable

[fischermx]

What does it mean, when I get this 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 be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur.

The server was working just some minutes ago and now all my sites respond with the same message.

 

[tanmaya]

Which user or domain or server?

 

[fischermx]

Which user or domain or server?

For example :
xbasecorner.com, clippercorner.com

They were up, then started to show that message during 5-10 minutes, then were up again.

My question goes more and what that error message is about.

 

[Stephen]

It means IIS was being restarted, or the application pool hung, I will check on the given domains and see if they are in the same pool, and if that pool hung at some point before being recovered.

(Actually, if they are on win7, I rebooted it, and you might have seen that error while it was shutting down)