Drag & drop to install
Drag & drop this extension right into the Workflow Editor of KNIME Analytics Platform (4.x or higher).
Learn moreExtension 
KNIME Excel Support
This feature contains nodes for reading and writing Excel files with
KNIME. It uses libraries from the Jakarta POI project (http://jakarta.apache.org/poi/index.html)
which is part of and copyrighted by the Apache Software Foundation
(http://www.apache.org).
Legal
Copyright by KNIME AG, Zurich, Switzerland
This plugin uses libraries from the Jakarta POI project
(http://jakarta.apache.org/poi/index.html) which is part of
and copyrighted by the Apache Software Foundation (http://www.apache.org).
Update site information
KNIME Analytics Platform 4.2 Update Site, Version 4.2.0
http://update.knime.com/analytics-platform/4.2
In case you can’t install the extension via drag & drop, please check that the update site is activated.