Microsoft's Multi-Factor Authentication Service Outage Occurs Again


On November 19, Microsoft's Multi-Factor Authentication service outage lasted for 14 hours. Since Microsoft Azure Active Directory and Office 365 users authenticate via this service by using an additional authentication factor rather than their passwords, they were locked out of the service.

In the beginning, Microsoft deployed a hotfix to customers who had trouble logging into their Microsoft Office 365, Azure Active Directory, etc. accounts so as to solve the Multi-Factor Authentication issue.

But this company learned that some users hadn't received the authentication codes that they should get by SMS or other ways. Later, it discovered this MFA issue was caused by a recent update that aimed at improving the connection to caching services.

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Created by Vera 19 weeks 3 days ago – Made popular 19 weeks 2 days ago
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