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diff --git a/pentesting/pentesting-web/iis-internet-information-services.md b/pentesting/pentesting-web/iis-internet-information-services.md
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--- a/pentesting/pentesting-web/iis-internet-information-services.md
+++ b/pentesting/pentesting-web/iis-internet-information-services.md
@@ -133,6 +133,15 @@ C:\xampp\sendmail\sendmail.ini
 C:\xampp\tomcat\conf\server.xml
 ```
 
+### HTTPAPI 2.0 404 Error
+
+If you see an error like the following one:
+
+![](../../.gitbook/assets/image%20%28446%29.png)
+
+It means that the server **didn't receive the correct domain name** inside the Host header.  
+In order to access the web page you could take a look to the served **SSL Certificate** and maybe you can find the domain/subdomain name in there. If it isn't there you may need to **brute force VHosts** until you find the correct one.
+
 ## Old IIS vulnerabilities worth looking for
 
 ### Microsoft IIS tilde character “~” Vulnerability/Feature – Short File/Folder Name Disclosure