We recently uninstalled Azure AD Connect from one our utility servers. After doing so, ODBC DSNs using SQL Server Native Client 11 were broken. In ODBC Manager these DSNs could not be configured and when highlighted the message at the bottom of the dialogue said the driver was missing and the only thing that could be done with the DSN was remove. We reinstalled Azure AD Connect and the DSNs were fully functional again. I searched far and wide and I did not find anything that shows a relationship between Azure AD Connect and SQL Server Native Client 11 and I certainly did not find anything that would warn me of this unintended consequence. Does anybody have any information on this?