Can I only add one application when configuring a subsite in iis7?

Assumption: Main site A subsites b1, b2, b3

Add application b1 to iis7 station A and you can use http://www.a.com/b1 to access it this way

After that, if you add b2 in the same way, you will no longer be able to access iis. Can only one application be added to a main site? Asking God for guidance

Reply content:

Assumption: Main site A subsites b1, b2, b3

Add application b1 to iis7 station A and you can use http://www.a.com/b1 to access it this way

After that, if you add b2 in the same way, you will no longer be able to access iis. Can only one application be added to a main site? Asking God for guidance

Already solved,

IIS configuration httpd.conf file restricts access to the directory problem