How to solve the HTTP/1.1 500 server error when creating an ASP. NET Project

Step 1 (enable the MSDTC Service)
Open Control Panel → Administrative Tools → Services → find service Distributed Transaction Coordinator → right-click Properties → change Startup type to manual or automatic, then OK → right-click to start the service
Note: If the service does not exist or cannot be started, it means that your machine may not have installed the service. Start to run and enter the command
1. iisreset/stop
2. Net user ASPnet/delete
3. cd c: \ WINDOWS \ Microsoft. NET \ framework \ v1.1.4322 aspnet_regiis-I
4. MSDTC-install
Step 2
Start → run → cmd
Enter cd % WINDIR % \ system32 \ inetsrv and press Enter.
Enter rundll32 wamreg. dll createiispackage and press ENTER
Enter regsvr32 asptxn. dll and press Enter.
Step 3
Start running input iisreset/start
Open Control Panel → Administrative Tools → Internet Information Service → start the default website (with a triangular arrow)
OK. If you are ie7.0, you still need to configure it.
Open IE browser → tool Internet Options → Security → local Internet → site → advanced → enter http: // localhost/Add OK