There is no ASP. NET 2.0 in the IIS Web service extension

The ASP. NET v2.0 component is installed on the server, but the ASP. NET v2.050727 is not found in the Web service extension of IIS, which causes the Web pages that are based on. NET2.0 to not be browsed properly.

Workaround:
Open IIS, go to the Web service extension, click Add a new Web service extension under the right window task, click Add in the Pop-up window, and then find x:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\ Aspnet_isapi.dll (x is the system installation drive letter, a disk is C), then click the OK button to save the settings, and finally set its status as "allow".

Problems you may encounter:
Prompt for error when opening Web page: Current identity (NT authority\network SERVICE) does not have "C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP. Files "for write access issues.
The workaround for this problem is: in cmd mode, enter: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_regiis-i-enable (Ibid., C is the system installation letter), It will return to normal once the installation has been performed.