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Office 365 - Skype for Business

Note: The Lync name is being replaced by 'Skype for Business' by Microsoft. If you see references on this site or in the Office 365 Portal to 'Lync' or 'Skype for Business', note that both refer to essentially the same service.

Eligibility Requirements

All active CSU Faculty, Staff, and Students are licensed to use Skype for Business. Skype for Business is available to users regardless of their eligibility for Office ProPlus or Student Advantage.

Skype for Business/Lync Client Setup Steps (applicable for Mac or Windows-based computers).

Skype for Business provides instant messaging (IM), audio, and video calling. It also supports desktop sharing on Windows-based computers. CSU Skype users can use Skype to connect with other CSU Skype for Business users or external contacts using Skype. The instructions below are intended to provide introductory steps for accessing and using Skype for Business.

  1. If you do not have the Skype for Business or Lync Client installed as part of Office 2013, you can install the client from the O365 Portal using the steps below:
    1. Navigate to the O365 Portal and login with your CSU eID in the format of
    2. Click the gear icon in the upper right corner of the O365 Portal and click “Office 365 Settings”
    3. Click "Software" (on the left).
    4. From the “Lync” section, choose the appropriate Language and Version options and then click “Install”.
    5. After installing the client, be sure to check for and install any applicable updates.
  2. Launch the Lync or Skype for Business client and login using your eName formatted as along with your eID password.

Note: The Lync client for Mac will prompt you to enter both an e-mail address and a UserID - you should enter in both fields.