How to Fix HTTP Error 404.15: Increasing Query String Length Limits in web.config?

How to Allow Requests of Any Length in web.config

When building a website involving file creation based on textarea content, developers may encounter an HTTP error 404.15 indicating a restricted query string length. To overcome this obstacle, web.config can be configured to allow requests of any size.

In the web.config file, add the following code under :

<security>
    <requestFiltering>
        <requestLimits maxQueryString="32768"/>
    </requestFiltering>
</security>

The "maxQueryString" attribute sets the maximum length of the query string. The value provided here (32768) is an example; it can be adjusted as needed.

Additionally, it may be necessary to include the following code under :

<httpRuntime maxQueryStringLength="32768" maxUrlLength="65536"/>

These configurations allow for the processing of larger requests and enable the creation of client-side files from textarea values. The specific values specified for maxQueryStringLength and maxUrlLength can be modified to suit the requirements of the application.

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