Thousands of companies without access to e-mails: Microsoft Office 365 with worldwide disruptions
from David Wurm 
on January 26, 2019, 16:35 pm | Write a comment
Thousands of companies - and also a few private customers - have been with us since Thursday Prostruggling with Office 365 from Microsoft. For example, numerous users are currently unable to reach the login page because there is a Proproblem with Microsoft's authentication server. You are already working on Prostated problems.
Some companies have been paralyzed again and again since Thursday. Due to a large ProDue to problems with Microsoft's popular Office 365 service, some users are currently unable to log into the platform. In general, users from Europe, the Middle East and Africa are affected. After my own tests and research, some companies with Microsoft Office 365 servers in Germany and Austria have told me Proproblems reported. However, some servers do not seem to be affected by this - this is how the service or the registration works for some users proflawless. For example, a user reports to Heisethat his entire company can't really work right now. Access to the webmail (OWA) or Outlook itself is not possible.
Reason known, interference suppression is in progress
As Microsoft has already announced on Twitter, this is due Proproblem on parts of the domain controller. This service is responsible for the central authentication of users. Since Friday morning there has also been a problem with the Exchange authentication service. This is what Microsoft calls its email service. Companies and others who host their Microsoft infrastructure themselves ("on-premises") are not from this Proproblem affected.
We've determined that a subset of Domain Controller infrastructure is unresponsive, resulting in user connection time outs. We're applying steps to mitigate the issue. More details can be found in the admin center published under EX172491.
- Microsoft 365 Status (@ MSFT365Status) 24 January 2019
Our telemetry data is indicating connection time outs within the Exchange authentication infrastructure, resulting in impact. More details are published under EX172491 in the admin center.
- Microsoft 365 Status (@ MSFT365Status) 25 January 2019
Affected companies can currently do nothing at all - even if it sounds stupid. You can only check the current status in the admin center and the Microsoft Twitter status account track. A comment on which that Proactually describes the problem quite well: “As an IT person, I think it's great, there used to be Proproblems with night shifts and time pressure […], today I refer to an article on heise.de and go into the weekend on Friday at 12, can’t do anything anyway.” – according to a user in the forum of Der Standard.
This is the second major disruption at Microsoft in a short period of time: last year at the end of November there was a major disruption in Microsoft's OneDrive service. There was one Proproblem when registering users who have a Two-factor authentication activated. We'll keep you informed here.
