O365 Authentifizierungsmodus ändern

Guten Morgen,

Microsoft hatte letzte Woche eine kleine Beeinträchtigung im Zusammenhanng mit O365 und Outlook Clients.

Verlauf: Multiple credential prompts in the Outlook client
Benutzerauswirkungen: Users may have received repeated credential prompts within the Outlook client.
Title: Multiple credential prompts in the Outlook client

User Impact: Users may have received repeated credential prompts within the Outlook client.

More info: While we were focused on remediation, users that had access to other protocols such as Outlook on the web or mobile devices could access their email without issue.

This issue only impacted customers using basic authentication. Customers who were able to use Modern Authentication to mitigate impact for affected users; however, this process may have required several hours to take effect for some customers.

For some customers who have disabled Modern Authentication, there was a secondary issue that was causing the client to attempt to use Modern Authentication regardless of the setting.

Final status: We've verified that the fix has been deployed to the affected infrastructure and confirmed via customer reports and service health monitoring that the issue has been resolved.

Scope of impact: This issue affected a subset of customers and users who were connecting to the service using Basic Authentication and utilized service-based search or a Focused inbox.

Start time: Monday, May 4, 2020, at 7:00 AM UTC
End time: Monday, May 11, 2020, at 5:05 AM UTC

Preliminary root cause: A recent update to the Exchange Online service contained a code issue that caused repeated credential prompts for basic authentication users.

Next steps:
- We're reviewing our update and validation procedures to prevent similar issues from reoccurring and to identify issues before initiating deployment.
- We're reviewing our deployment and patching procedures to more quickly identify the source of impact and mitigate impact in a more timely fashion.

We'll publish a post-incident report within five business days.

Mitunter steht im Verlauf, dass auf den "modernen Authentifizierung" umstellen soll. Nun meine Frage - kann ich das ohne weiteres ausführen, oder muss an einer anderen Stelle auch noch Einstellungen im O365 angepasst werden? Muss nach einer Anpassung von dem Wert Get-OrganizationConfig etwas an den Outlook Clients o.ä. geändert werden?

Grüße und danke vorab.
lupo