Make IIS support ASP. NET 2.0

Yesterday, vs2008b2 was installed on the Virtual Machine. Today, when a project was opened for testing, it was found that although V2.0 is selected in IIS, the 2.0 option does not take effect. After checking on the internet, when vs2008 was installed, ASP. NET 2.0 support was not added to the IIS web service extension... No, you only need to add it yourself.
After adding it, it was successful, and the problem came again ~ Prompt:
The current identity (nt authority \ Network Service) does not have the write access permission for "C: \ WINDOWS \ Microsoft. NET \ framework \ v2.0.50727 \ temporary ASP. NET files.

Solution: add the user: network service to the directory of C: \ WINDOWS \ Microsoft. NET \ framework \ v2.0.50727 \ temporary ASP. NET files. The corresponding permissions are: full control.