I'm trying to make a simple WinForms application that changes Skype for Business status (I'm using Skype for Business 2016). According to the links below, I should be able to install the Lync 2013 SDK (which I'm finding here: https://www.microsoft.com/en-in/download/details.aspx?id=36824 ). But when I attempt to install it, it says Microsoft Lync 2013 not found. Go here to download and install: http://go.microsoft.com/fwlink/?LinkID=248583. Any suggestions? Do I have to also have Lync installed in order to interact with Skype for Business 2016?
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			You don't need Lync 2013, but the installer thinks you do and checks for it. It checks a couple different registry keys looking for it, so if you fake one of them you can get past the check:
- Open regedit
- Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\15.0\Lync(create any keys along the way if necessary)
- Create a new string value named InstallationDirectory; the data doesn't matter
- Run the SDK installer
- Once it's finished, undo your changes to the registry
If you don't want to navigate around regedit manually, this registry script will create the appropriate key:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\15.0\Lync]
"InstallationDirectory"=""
Note that I did this after following @sri-chandrasekaran-microsoft 's solution- derekantrican