Fix for error: Lync has both per-user and per-machine instances installed

Tuesday, May 10, 2011
You may see the error, "Lync has both per-user and per-machine instances installed. Click OK to remove the per-user installation."  The error occurs every time the Lync client is launched.


This is caused when a user has downloaded and installed the Lync Attendee User-Level Client, and then installs the Lync client.  This is bound to happen because the Lync Attendee client is freely available on the web (http://www.microsoft.com/downloads/en/details.aspx?FamilyID=68a3ca04-a058-4e47-98ea-9e9af7ebd6e3), but the Lync client is not. 

Remove the Lync Attendee and it fixes the problem.

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1 comment:

  1. AnonymousFebruary 12, 2013 at 8:09 AM

    This makes sense, although I have scoured my client's computer and cannot find a copy of Lync Attendee or LiveMeeting.

    ReplyDelete

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