How do I disable the &debug=true?

Here are two web.config workarounds (there are probably other ways to do it)

A) Return a 404

If request filtering is enabled in IIS then you can add something like the following to web.config:

<system.webServer>
   <security>
      <requestFiltering>
         <denyQueryStringSequences>
            <add sequence="debug=true" />
         </denyQueryStringSequences>
      </requestFiltering>
   </security>
</system.webServer>

B) Redirect
If you are able to install the URL Rewrite module in IIS then you can define a rewrite rule that makes a redirect to the same URL without debug=true

<system.webServer>
	<rewrite>
            <rules>
                <rule name="DebugDisabler" stopProcessing="true">
                    <match url="(.*)" />
                    <action type="Redirect" url="{R:1}?{C:1}{C:2}" appendQueryString="false" redirectType="Permanent" />
                    <conditions>
                        <add input="{QUERY_STRING}" pattern="(.*)debug=true[&amp;]?(.*)" />
                    </conditions>
                </rule>
            </rules>
        </rewrite>
</system.webServer>

Developer forum

How do I disable the &debug=true?

Replies