Outlook connection issues with Exchange Online (07/15/2020)

[German]As of July 15, 2020, Outlook users did not only have the problem that the application crashes due to an update. Some users were also no longer able to log on to Exchange Online with Outlook.


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I had reported about the crash problem of Outlook (Click-2-run version) in the article Outlook crashes with Error 0xc0000005, Workaround/Fix. Blog reader Andreas P. did send me this night the status messages from the Administrator Status Dashboard for Office.

-15.07.2020 20:22:32

Title: Users experiencing Outlook connection issues and crashes

User Impact: Users may experience crashes or may be unable to access Exchange Online via Outlook.

More info: Our analysis indicates that Outlook on the web and mobile clients are unaffected. Users may be able to leverage those protocols as an alternative means to access email and service features while we remediate this problem.

Current status: We’ve identified the probable cause of the issue and are applying fixes. We’ve confirmed that our fixes are effective and users will experience service restoration as our solution reaches their respective environments; however, deployment to all affected users may take several hours to complete.

Scope of impact: This issue may potentially affect any of your users attempting to use Outlook.

Next update by: Wednesday, July 15, 2020, at 7:30 PM UTC

-15.07.2020 19:12:14

Title: Users experiencing Outlook connection issues and crashes

User Impact: Users may experience crashes or may be unable to access Exchange Online via Outlook.

More info: Our analysis indicates that Outlook on the web and mobile clients are unaffected. Users may be able to leverage those protocols as an alternative means to access email and service features while we remediate this problem.

Current status: Our initial review of the available data indicates that recently deployed updates are the likely source of the problem. We’re performing an analysis of all recent service updates to isolate the underlying cause of the problem and to determine the most expedient means to restore service.

Scope of impact: This issue may potentially affect any of your users attempting to use Outlook.

Next update by: Wednesday, July 15, 2020, at 6:30 PM UTC

-15.07.2020 18:40:14

Title: Users experiencing Outlook connection issues and crashes

User Impact: Users may experience crashes or may be unable to access Exchange Online via Outlook.

More info: Our analysis indicates that Outlook on the web and mobile clients are unaffected. Users may be able to leverage those protocols as an alternative means to access email and service features while we remediate this problem.

Current status: We’re analyzing the available data to isolate the source of the problem.

Scope of impact: This issue may potentially affect any of your users attempting to use Outlook.

Next update by: Wednesday, July 15, 2020, at 5:30 PM UTC

-15.07.2020 18:20:49

Title: Users experiencing Outlook connection issues and crashes

User Impact: Users may experience crashes or may be unable to access Exchange Online via Outlook.

Current status: We’re investigating a potential issue in which users may experience crashes or may be unable to access Exchange Online via Outlook. We’ll provide an update in 30 minutes.


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