Microsoft explains on Twitter that “DNS issues affect many Microsoft 365 and Azure services” and points to its own status page, which should contain additional information about failures. However, this is not the case (anymore). On the contrary, it says there are no problems. Nonetheless, Friday night at least the teams, Xbox Live and SharePoint were somewhat unavailable.
History can also be followed on Twitter. The first issues will appear late Thursday evening. “We are in the process of investigating issues that may no longer allow users to access their Microsoft 365 services. More information will follow.” No further information was forthcoming except for a subsequent explanation for the failure of the DNS system. After about three hours, it was clear to everyone that all services were available again.
Failures of cloud services are repeated
Microsoft only had similar issues: two weeks ago, several services failed due to an authentication error. In particular, it would be an error on a key in the Azure Active Directory (AAT) that was automatically deleted, although it is still needed. Last fall, Microsoft’s cloud services declined due to global AAD change. At that time, you could not register for five hours. The failure was also at night for Central European time, so it is unlikely to have affected many companies and other users in this country. But this is different with previous issues.
At Google, too, there are many vulnerabilities in cloud services that are not available in many other services; Including mails, calendars and collaboration tools. At the same time, Google provides premium support to companies called Mission Critical Services (MCS), which target customers who cannot afford service failures – for example in the financial sector. This service should not only guarantee the failure-free operation of the cloud, but also develop ideas and methods for the operation of the failure-safe applications with the company.