Hi,
From your descripiton, was there only 2012 MDS add-in encounter the issue? Which 2012 MDS add-in did you use? 2012 MDS add-in SP1 or 2012 MDS add-in RTM I installed 2012 MDS add-in SP1 to test, and it worked fine in my computer. If you install
the 2012 MDS add-in RTM, I recommend you install the 2012 MDS add-in SP1 to check the issue:
http://www.microsoft.com/en-us/download/details.aspx?id=35581
Next,there will be disabled the add-in which loading too slow in starting Excel. We could check the event log which ever happend.
Please chick File>Options>Add-ins.The Master Data Services Add-in for Excel should be listed under the heading
Active Application Add-ins as shown here at the top of the listing.
If it appears under the heading of Disabled or Inactive Application Add-ins. If it not, at the bottom of the dialog box, in the
Manage list, select Disabled Items or COM Add-ins and click
Go. The check box for the Add-in must be selected for the Add-in to be enabled.
Then, I suggest you could disable the other add-in, and enable 2012 MDS add-in to test.
For more detail information, please refer to the following link:
https://social.technet.microsoft.com/wiki/contents/articles/4520.troubleshooting-the-master-data-services-add-in-for-excel.aspx
Thanks,
George Zhao
Forum Support
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