Causes and Solutions of server application unavailable

This kind of prompt frequently appears on the Asp.net site.

Code:

Server application unavailable

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

This problem is generally caused by the following reasons:

1. users in the Users Group do not have the permission to read or write site files.

Solution: Set the Users Group read and write permissions for the site directory

2. The site Asp.net version is incorrectly selected

This problem may occur in the case of multi-version framework coexistence, such as ASP. net1.1 and 2.0, please see the http://bbs.51aspx.com/showtopic-750.html

Solution: select the current Asp.net version from "Site-" property -".

3. ApplicationsProgramPool conflict

Solution: Create an application pool in application pool-and select the application pool you just created in the home directory of Site-properties-

Note: The preceding three reasons may occur at the same time. You can solve them step by step.

Supplement:

Sometimes "Service unavailable" appears, which is a common error in iis7. The general cause is: simultaneous online users or bandwidth exceeding the limit, and the corresponding site address pool is stopped (for many reasons ).

 

Useful References

Http://bbs.51aspx.com/showtopic-1883.html

Http://www.xishui.net/info/2007-4/2007-4-10-4431.htm

Http://www.xishui.net/news/2007-4/2007-4-10-4431.htm

Http://blog.bluephp.com/read.php/256.htm

Http://www.z6688.com/info/47957-1.htm

Http://www.zxbc.cn/html/20080501/33858.html