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Office 365 and Central Exchange Services at CSU is the primary resource for faculty and staff to find information regarding Exchange and Office 365 services. If you have questions or if you are looking for information not listed here, please contact the CSU Central IT Help Desk at

News, Announcements, and Updates

2/8/2018 - Microsoft Teams: Tools to manage Microsoft Teams for use in Office 365 are now available to resource coordinators. Please refer to Microsoft Teams for more information about creating and using teams.

10/18/2017 - Outlook 2007 No Longer Supported as of 10/31: Starting October 31, Microsoft will no longer support the RPC over HTTP protocol used by Outlook 2007 when connecting to Exchange Online. While Outlook 2007 will continue to work after October 31, the quality of the mail experience will decrease over time. Affected users should upgrade to Outlook 2010 or newer (Outlook 2016 is recommended) as soon as possible.

9/13/2017 - RESOLVED - Directory Data Problem: A backend data process caused issues with eID data that then filtered into several downstream systems including Active Directory and Office 365. ACNS and Information Systems staff identified the root cause and have fixed affected systems.

8/2/2017 - Self-Service Tool to Release Messages from Quarantine Available: Spam filtering in Office 365 is configured to quarantine e-mail considered to be "high confidence spam". Users can use the steps posted at Self-Service: Release Messages from Quarantine to view and release items from the Office 365 quarantine.

7/26/2017 - Planned Maintenance to Install Exchange 2016 Servers on 7/31/2017 from 6:00pm-11:00pm: ACNS Will be installing new Exchange 2016 servers in support of Office 365 backend services such as account provisioning and sub-domain e-mail routing on Monday, July 31 starting at 6:00pm. Because all Exchange mailboxes are hosted in Office 365, user access to e-mail services will not be affected. Although not expected, Outlook clients may notice updated AutoDiscover settings and prompt a user to accept or possibly need to be restarted.

6/16/2017 - New OneDrive for Business Sync Client Required After 9/12/2017: ACNS is planning to update sync settings affecting Office 365 OneDrive for Business on 9/12/17 that will disable syncing for users still using legacy sync clients. The new sync client has been available for install since Spring 2016 and the planned update is necessary to allow users to sync both SharePoint site libraries and OneDrive storage on their PCs. Please refer to Upgrade to New OneDrive Sync Client for more information.

5/22/2017 - Office 365 Modern Authentication: ACNS will enable the modern authentication option in Exchange Online and Skype for Business on 5/30/2017. Please refer to Office 365 Modern Authentication for more information.