In the Install Microsoft Lync page:
A. Select English (United States) in the Language: drop down menu.
B. Select your Windows operating system version. NOTE: If you do not know where to find your Windows operating system version, click on the "Which Version?" link on the Office 365 downloads page. C. Click Install.
Figure 2: Install Microsoft Lync
Click Run in the Security Warning dialog box.
Figure 3: Click "Run" in the Security Warning dialog box.