Default Internet Information Server (IIS) behavior since IIS 7 rejects requests to Urls with a plus (+) sing in the path like:
The behavior is considered a security feature and controlled by a setting called "Double Escaping Filtering". To override the default rejecting behavior the setting needs to be changed either via a web.config configuration:
www.somesite.com/one+two or
www.somesite.com/path/subpath/three+four
The behavior is considered a security feature and controlled by a setting called "Double Escaping Filtering". To override the default rejecting behavior the setting needs to be changed either via a web.config configuration:
<system.webServer>
<security>
<requestfiltering allowDoubleEscaping="true" />
</security>
</system.webServer>
or an IIS Management user interface: