I can't upload larger files in the Web UI. The following error is logged in the web log file:

System.Web.HttpException: Maximum request length exceeded

What should I do to allow larger uploads?

Open the following web.config files in a text editor:
\InfoShare\Web\Author\ASP\Web.config
\InfoShare\Web\InfoShareCS\web.config

Search for httpRuntime maxRequestLength and change it into the following value to allow the upload of 256MB (base 64 encoded):

<httpRuntime maxRequestLength="262144" targetFramework="4.5" 
requestValidationMode="4.5" enableVersionHeader="false" />

Search for requestLimits maxAllowedContentLength and change it into the following value to allow the upload of 256MB (base 64 encoded):

<requestLimits maxAllowedContentLength="268435456" />

(256MB base64 encoded is around 192MB binary size, the real size on you file system of your laptop)