When Visual Studio is running, the system prompts that the application cannot be started.

A problem occurred while working on the project today. When you press F5 to run the program, a dialog box is displayed, prompting "the application cannot be started: http: // localhost: 4733/Default. aspx ", depressed, the first time encountered this problem.

Cause: this error occurs because the IE key in the registry is faulty.

I. solution:

1. Open the Registry (START-run-regedit), but use the shortcut key WIN + R to open the running window.
2. Find the following key values:
HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows \ CurrentVersion \ App Paths
3. Right-click App Paths and change the value of the new option to C: \ Program Files \ Internet Explorer \ iw.e. EXE.
4. Create-> string value-> name: Path value: C: \ Program Files \ Internet Explorer;

If not, try to disable the 360 Trojan firewall by being intercepted by the 360 Trojan firewall.