Viktor
Oct 14, 2010
visibility 7867
star star star star star
(2 votes)

Querystring too long in EPiServer Composer

Stumbled upon an issue with EPiServer Composer 4 and that the query string was too long. Not entirely sure how great this fix is out of a security stand point, but if anyone else knows a better solution please let me know.

The error
HTTP Error 404.15 - Not Found
The request filtering module is configured to deny a request where the query string is too long.

The solution

    <system.webServer>
        <security>
            <requestFiltering>
                <requestLimits maxQueryString="2097151" />
            </requestFiltering>
        </security>
</system.webServer>
Oct 14, 2010

Comments

May 15, 2012 01:06 PM

I'm using W2008 and IIS 7.5, and experied problems when trying to edit a layout block containing several other layoutblocks containing contentblocks. The generated querystring was insanely huge.

I solved it by adding a requestLimits tag under the location path "dropit/plugin/extension/ui/edit".















error Please login to comment.
Latest blogs
Optimizely: Upgrade Opti-ID and .NET 10 in CMS 12

Many Optimizely customers are planning their roadmap around a future migration to Optimizely CMS 13. As a result, upgrades such as Opti ID adoption...

Madhu | Jun 23, 2026 |

Understanding Optimizely Graph: Caching, Webhooks & Avoiding Stale Content (Optimizely SaaS CMS)

📌 Scope: This post covers Optimizely CMS (SaaS) only — using the official @optimizely/cms-sdk and @optimizely/cms-cli packages with Next.js 15. If...

Kiran Patil | Jun 23, 2026 |

Optimizely Content APIs: the Setup the Docs Don't Walk You Through

CMS 13 is pushing things firmly in the direction of Optimizely Graph, but plenty of teams are still running on older CMS versions, or have good...

Andre | Jun 22, 2026

Translating content in Optimizely CMS with Anthropic Claude

An add-on with an Anthropic translator provider that lets you translate content in Optimizely CMS using Anthropic Claude.

Tomas Hensrud Gulla | Jun 20, 2026 |