Getting a potentially dangerous Request.Path value was detected from the client (<) at domain level

Question

I have hosted my web application at IIS like as follows.

MyDomain ->Sub Domain 1 ->Sub Domain 2 So I am getting a potentially dangerous Request.Path value was detected from the client (<) error at domain level For Ex- Suppose I hit the URL as www.MyDomain.com/< in this case, I am getting error. So anyone help me on how to handle this at the domain level.

I achieved this at sub-domain level like

Answer 1

Servers are hit with a URL containing an invalid character. The issue is because of “<” in the request path.

you could try to set below code in web.config file under <system.web> section:

 <pages validateRequest="false">

or

Look for requestPathInvalidCharacters in the config files and update it to remove "&lt" from it.

 <system.web>
    <httpRuntime requestPathInvalidCharacters="&lt;,&gt;,%,&amp;,:,\,?" />
    </system.web>

Getting "A potentially dangerous Request.Path value was detected from the client (&)"