The URL contains the + sign, and the error "The Request filtering module is configured to reject requests that contain double escape sequences" workaround

Search keywords include spaces, after submission is automatically turned into a "+" number, reported the following error:

HTTP error 404.11-not the found request filtering module is configured to reject requests that contain a double escape sequence.

Workaround:

Add the following configuration node to the <system.webServer> node of the Web. config file

<system.webServer>
<security>
<requestfiltering allowdoubleescaping= "True"/>
</security>

The URL contains the + sign, and the error "The Request filtering module is configured to reject requests that contain double escape sequences" workaround