When you are trying to connect to MDS from Excel, if you get the following error
“The Master Data Manager Web Application is Older than the Add-in Version”
while using MDS excel addin, then one possible reason is that the connection for the MDS excel addin does not like the full address i.e.
You just need to enter http://servername/ or http://servername/mds and it works fine!
The error message is not clear for this issue!!