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https://www.vspbreda.nl/nl/ms-office/office-2013/outlook-2013-lync-error-the-user-accounts-in-outlook-and-microsoft-lync-do-not-match-please-make-sure-you-are-signed-in-to-both-applications-with-the-same-user-name-and-privileges-solved/
Outlook 2013 / Lync Error : The user accounts in Outlook and Microsoft Lync do not match. Please make sure you are signed in to both applications with the same user name and privileges. [SOLVED]