App_Offline.htm in ASP.NET

Author posted by Jitendra on Posted on under category Categories ASP.NET and tagged as Tags with 1 Comment on App_Offline.htm in ASP.NET

If you place a file with the name App_Offline.htm in the root of a web application directory, ASP.NET 2.0 will shut-down the application, unload the application domain from the server, and stop processing any new incoming requests for that application.

ASP.NET will also then respond to all requests for dynamic pages in the application by sending back the content of the App_offline.htm file (for example: you might want to have a “site under construction” or “down for maintenance” message).

Once you remove the App_offline.htm file, the next request into the application will cause ASP.NET to load the application and app-domain again, and it will be back to normal.

If you place a file with the name App_Offline.htm in the root of a web application directory, ASP.NET 2.0 will shut-down the application, unload the application domain from the server, and stop processing any new incoming requests for that application.

ASP.NET will also then respond to all requests for dynamic pages in the application by sending back the content of the App_offline.htm file (for example: you might want to have a “site under construction” or “down for maintenance” message).

Once you remove the App_offline.htm file, the next request into the application will cause ASP.NET to load the application and app-domain again, and it will be back to normal.

Limitation:

Note that the file must be at least 512kb in size or it will not work. This a well known ‘limitation’.

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