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Up-to-Date System Information:

Connection problems with Office 365

posted 7/15/2015 3:40:33 PM
closed 7/15/2015 8:00PM

Who is affected?

Users who are using Outlook to connect to Office 365 for email


Connection problems with Office 365

Systems Involved:

Office 365


Some users may not be able to send or receive mail using Outlook.  This problem does not appear to affect all users.  Microsoft is aware of the situation and is investigating.

Users who are having problems connecting with Outlook can still use OWA as that does not appear to be affected.



7/15/2015 5:14:39 PM:
Current Status: [Microsoft] Engineers have determined that this issue may be related to a recent update to the service and are currently working to revert the update.

7/15/2015 4:41:21 PM:
From Microsoft: Current Status: The investigation determined that a portion of infrastructure which facilitates authentication to the service is experiencing higher-than-normal resource usage. Engineers are analyzing service telemetry to determine what is causing the high resource usage.

User Experience: Affected users are unable to connect to the Exchange Online service when using multiple protocols including Outlook, Outlook Web App (OWA), Exchange ActiveSync (EAS), and Exchange Web Services (EWS).

Customer Impact: A higher than average number of customers are reporting this issue. Analysis indicates that customers will likely have some users experiencing this issue.

7/15/2015 4:05:12 PM:
Microsoft has stated the problem has expanded and now impacts users on OWA as well as mobile devices in addition to Outlook clients.�

7/15/2015 3:50:20 PM:
7/15/15 - 3:48pm - the problem is also affecting the transport servers, so email delivery for all users is also impacted.

Problem Resolution: 

Microsoft has fixed the problem.  The mail that was backlogged during the outage has been delivered.

Information Technology apologizes for any inconvenience this may cause you. Please contact your departmental consultant, call the Help Desk at 766-HELP (4357), option 1, or send an email to the Help Desk ( if you have any questions.


Priority Levels:

High -- (affects a majority of campus and/or applications used by a majority of campus) – updated hourly

Medium -- (affects a substantial portion of campus and/or applications used by them) – Updated every 2 hours

Low -- (affects or minimal portion of campus and/or has minimal impact on applications used on campus) – Updated every 4 hours

None -- (minimal to no urgency associated with resolving the incident/event) – Will update when resolved.

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