Compiler error message: cs0016: failed to write the output file "C: \ WINDOWS \ Microsoft. NET \ framework \ v2.0.50727 \ temporary ASP. NET files \

After installing framework 3.0
You cannot access a directory under c: \ windows \ Microsoft. NET \ framework \ v1.1.4322 \ temporary ASP. NET files. There are many causes of these errors, including the change of the bin directory or web. config and insufficient permission to access the file system.

Solution:

1. Disable or set the Indexing Service
2. Check the access permission of the bin directory.
3. Set the access permission for the temporary ASP. NET Files directory
4. Set WINDOWS \ Temp Permissions

Add full control permission to NETWORK SERVICE

P.s. when vs is installed on my machine. net2003 and. set temporary ASP. the net files directory and the Windows \ Temp Access Users are ASPnet and Network Service, and the permission is full control.