We're new to this project and we're running TFS 2013 and VS 2013.

Everyone using Visual Studio can see the multivalue control -- no problem.

Our web access, on the other hand, is not showing the control's value. Instead it shows "Cannot create work item control of type "MultiValueControl"".

What do I have to do to install the control for the web access page?

Hi MADCookie,

In the .zip file you downloaded, there should have been a zip file names "CodePlex.WitCustomControls.MultiValueControl2013.zip"

That's the file you need to upload to your TFS server.

To do so you need administrative privileges on the server. Then, simply open Web Access and click on the gear icon in the upper left corner. The new page should show you a tab labeled "Extensions". Click that and then click on the upload button to select the zip file. You need to enable the extension to have it show on your work item.

Stephane