The latest updates for Microsoft Office Professional 2016, likely culprit, "Security Update for Microsoft Excel 2016 (KB3203477) 32-Bit Edition" has made the PI Datalink non- functional.
Any attempt to bring up a tag search results in error.
Has impacted at least 5 people that have executed the Microsoft update. I'm not aware of anyone who has successfully got PI data link toolbar working after the Microsoft updates. As this is a company computer I do not have the administration rights to un-install the update. I do have a case into the company IT, however they are not OSI PI experts.