[OSC] for LinkedIn is no longer supported
When attempts to contact the service LinkedIn with the OSC, an error message that a wrong username or password has been used improperly viket. LinkedIn no longer support this service Outlook 2013.
To write LinkedIn on their help page:
From March 2015 we do not support anymore LinkedIn for Microsoft Outlook Social Connector. Outlook Social Connector was available only for Microsoft Outlook 2003, 2007, and 2010.
Yet another reason to leave Outlook.