ZDNet on Tuesday famous the outage, which prevents some users from logging into their Office 365 accounts.
We’re investigating a problem the place users could also be unable to register utilizing Multi-Issue Authorization (MFA). All particulars might be discovered beneath Service Incident (SI) #MO165847
Right here’s an replace from the Azure status page:
SUMMARY OF IMPACT: Beginning at 14:25 UTC on 27 Nov 2018, prospects utilizing Multi-Issue Authentication (MFA) might expertise intermittent issues signing into Azure assets, equivalent to Azure Energetic Listing, when MFA is required by coverage. Impacted prospects might encounter timeout errors.
CURRENT STATUS: Engineers discovered that an earlier DNS problem had resulted in failures for a big quantity of sign-in requests. This DNS problem has been mitigated. Engineers are recycling all backend providers to supply short-term mitigation, and we proceed to work on full restoration.
Issues with multi-factor authentication —which typically includes two steps to enter a recognized password in addition to a novel code delivered to at least one’s telephone — plagued Office 365 users on Nov. 19. The outage was blamed on three independent root causes, together with latency and response processing issues.
We’ll replace this submit if we be taught extra about Tuesday’s outage.