This setting allows you to override the syntax version to use in the queries to SharePoint when the search server (e.g. 2013) is different from the content server (e.g.. 2010).
The value of this setting is 15, representing the query syntax on a SharePoint 2013 search server, for more details click here.
For more information about search in Email Manager for Outlook, please see the Administrator Guide.
This Configuration Setting applies to:
Overriding Search Syntax Version
7.x Email Manager for Outlook6.x Contributor Pro, Email Manager for Outlook
|MSI Property Name||QUERY_SYNTAX_VERSION_OVERRIDE|
|Registry Root Key Priority||HKEY_CURRENT_USER|
|Registry Key Location||...\Contributor\EmailManager\Search\|
|String Value Name||QuerySyntaxVersionOverride|
|Possible Value Data||15|
For details on applying a configuration setting, please refer to the article How to apply a Configuration Setting.