If you already installed the Q1 2014 Security Update, you do not need to apply any changes. Just verify that the changes described below are applied to your Sitecore solution.
Sitecore provides Manual Installation instructions for customers who are unfamiliar with executing PowerShell scripts or who lack required permissions to execute the Scripted Installation. These instructions may also be required if the Scripted Installation cannot be successfully completed due to specifics of the environment configuration or reports unexpected configuration during the pre-verification step.
Installation Instructions For Fix #400290:
- Copy the Sitecore.Support.400290.dll file into the '/bin' folder of the Sitecore instance.
- In the "Web.config" file:
The Sitecore icon handler node in the "/configuration/system.webServer/handlers section should be configured with the following values:
<add verb="*" path="sitecore_icon.ashx" type="Sitecore.Support.Resources.IconRequestHandler, Sitecore.Support.400290" name="Sitecore.Support.400290.IconRequestHandler"/>
The Sitecore icon handler node in the "/configuration/system.web/httpHandlers" section should be configured with the following values:
<add verb="*" path="sitecore_icon.ashx" type="Sitecore.Support.Resources.IconRequestHandler, Sitecore.Support.400290"/>