outage fixed, Microsoft 365 facing now new issues 01/29/2019)

[German]Today Microsoft reported that the major outage of last week was fixed. But now Microsoft 365-/ users can no longer access safe links in emails. And outages of Azure, Outlook, Skype etc. are also floating in.

Advertising outage from 01/24/2019 fixed

On 24 January 2019, there was a major outage of Exchange Online, a service provided by I had reported that within my blog post Office 365 down (January 24, 2019)? The incident also continued on Saturday (see Office365 outage: a status update (01/26/2019)). Yesterday Microsoft posted a message on Twitter that they had distributed a patch on their Exchange online servers and telemetry said the problem had been fixed. 

German blog reader Georg D. sent me the above screenshot a few hours ago. Microsoft states in the admin area that the problem has been fixed. At the same time they provided some explanations what they did to fix it (new DCs, code update, new traffic management etc.). They intend to submit a post-incident report within 5 days.

Now Links in Mails are broken and more

If it was first bad luck, now the luck is gone. Users are facing now issues with Microsoft 365, the subscription that bundles Office 365, Windows 10 and Enterprise Mobility + Security products. On Twitter and on the Internet there are more and more reports that there are massive disruptions at Microsoft 365. 


At Twitter (see the above tweet), Microsoft confirms that it is investigating a malfunction. Some users apparently can't click URLs in emails to open the target in the browser. Susan Bradley writes at that there are safe links in mails that cause problems. Bleeping computer has a few details: When selecting a link, an error 503 is returned. 

Error 503 bei Office365-Links
(Source: J. Walker)

This led to the conclusion that the problem may be due to the ATP Safe Links feature. Safe Links means that the web addresses (URLs) in email messages are scanned for dangerous link targets in real time by Microsoft's Advanced Thread Protection (ATP) when pointing / clicking on the link. However, this option is probably only available for Microsoft 365 Enterprise/Education in the E5/A5 subscription plans (see this discussion). 

A user specifies in the above tweet that the URL will be loaded if he removes the na01 part in the URL. Pretty crude, but hits a lot of users. 

Tip: There is a possibility to convert the blocked safe links. Visit the website, paste the blocked link from your email into the form. The converted URL should work .

ATP URL konvertieren

Error messages on downdetector

At and the German-language counterpart allestö the error reports are floating in.

Störung in Office365

If you manage to retrieve a map from, you should see the following picture. The disturbance affects Europe, but also other parts of the world and parts of the USA (currently 11:48 p.m. German time) I see major outages on the east of Australia and on the west coast of the USA.

Microsoft 365-Störung (29.1.2019)
(Microsoft 365-outage, 01/29/2019, Click to zoom)

Since 11:00 p.m. (German time) there are worldwide reports and user comments, that Outlook connection attempts fail, the two-factor authentication (TFA) does not work or Skype for Business is down (confirmed at At about 11:00 German time there is a peak with over 3,000 error reports. And an entry says:

29  January: Problems at Office 365

Office 365 is having issues since 10:37 AM EST. Are you also affected? Leave a message in the comments.

The archive reports for 01/29/2019 also outages for Azure, Outlook, OneDrive, Sharepoint Online, Exchange Online and Skype. On Twitter a user writes, that Microsoft displays the case #Ex172674 in the dashboard of Microsoft365 without ETA (estimated time of arrival). But I can't verify that. Susan Bradley writes now: The fix is rolling out now. Any of you affected?

Similar articles
Office 365 down (January 24, 2019)?
Office365 outage: a status update (01/26/2019)

Cookies helps to fund this blog: Cookie settings

This entry was posted in issue, Office and tagged , , , . Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *