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after i instill some dll file, my all asp.net app don't work, and have the following error:<br />
<br />
Server Application Unavailable <br />
The web application you are attempting to access on<br />
this web server is currently unavailable. &nbsp;Please hit<br />
the &quot;Refresh&quot; button in your web browser to retry your<br />
request. <br />
<br />
Administrator Note: An error message detailing the<br />
cause of this specific request failure can be found in<br />
the application event log of the web server. Please<br />
review this log entry to discover what caused this<br />
error to occur. <br />

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after i instill some dll file, my all asp.net app don't work, and have the following 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. 


.net applicatipn

An application server is a software framework that provides both facilities to create applications and a server environment to run them. Most application server frameworks contain a comprehensive service layer model, acting as a set of components accessible to the software developer through an API defined by the platform itself. For Web applications, these components are usually performed in the same running environment as their web server(s), and their main job is to support the construction of dynamic pages. However, many application servers target much more than just Web page generation: they implement services like clustering, fail-over, and load-balancing.