1.properties in IIS->; Home directory-> Configuration->; In the options. Check before "Enable parent path". Confirm refresh
2. In the Web service extension. IIS, select Active Server Pages and click Allow.
3. Configure different authentication as needed (usually anonymous authentication, which is the authentication method used by most sites). Attribute of authentication option in IIS->; Security->; Configuration under authentication and access control.
4. enter the properties of IIS- >; Security->; IP address and domain name restrictions. If you want to restrict access to certain IP addresses, you need to select Authorized Access, and then click Add to select disallowed IP addresses. Instead, you can only allow access to certain IP addresses.
5. control panel->; Management tools-> Computer management->; Local users and groups, enable the IUSR_ machine name account.
There are also factors such as firewall blocking, ODBC configuration error, Web server performance limitation, thread limitation, etc., which are also possible reasons why IIS server is inaccessible and IIS process is down! You look for problems from these points.