Following up the case we have had and the analysis done by engineering, this is the technote which documents this behaviour https://support.symantec.com/en_US/article.TECH231985.html, basically like the technote mentions the user experie...
You might perhaps attach the ev mac client log https://support.symantec.com/en_US/article.HOWTO38265.html.
Please report also the outlook version installed on OS X and any sp installed.
We have seen this issue occurring when the binary value for the Preferences column in the OWS_UserPreferences table gets corrupted.
The OWS_UserPreferences table since 11.0.1 stores each user EV Search preferences (such as where to...