Hope to help people who encounter the same problem.
This week, I encountered a problem that the local cookie will be disabled by Internet Explorer and fainted. I have added the trust site and it is still useless.
After a long time, I found that the value of 1a10 should be a node in the zone. I don't know when it will become 0x00000003. It should be 0x00000000.
I'm sorry.
Another problem is that when debugging is started, "error while trying to run project: unable to start debugging on the Web server. you do not have permission to debug the application. the URL for this project is in the Internet zone. click Help for more information. "Later I found it was a problem with Internet Explorer settings. It's really dizzy.
1. In the Internet Explorer, "Tools" menu, select "Internet Options ".
2. Switch to "security" tab.
3. Click on "Internet" (the globe icon. Its actually the default selected ).
4. Click on "Custom Level" in the bottom.
5. scroll down to find the "user authentication" section.
6. Select "Automatic Logon with current username and password ".
7. Click "OK" twice to exit.
This will solve the problem.