Microsoft’s MFA and My Sign-Ins glitch triggers 504 errors

Microsoft outage – Microsoft says it’s addressing an ongoing incident that can block some users from setting up multi-factor authentication and from accessing the My Sign-Ins platform. The company has put in mitigation steps, but elevated error rates are still being monitored as
At around 5 AM ET, Microsoft hit a wall that’s supposed to protect users: the company confirmed an ongoing incident that can prevent customers from setting up multi-factor authentication (MFA) and from reaching its My Sign-Ins platform.
In a post shared to Microsoft 365 Status on Twitter earlier today, Microsoft said it was investigating “an issue where some users may be unable to setup MFA or access the website.”
That warning quickly narrowed into something more concrete for customers—what they were actually seeing. In additional information posted in the admin center under MO1329260. Microsoft said those affected by the outage are encountering 504 Gateway Timeout errors when trying to access mysignins.microsoft.com. The message spelled out the impact plainly: “Some users may be unable to setup Multi-Factor Authentication (MFA) or access the mysignins.microsoft.com website. Users may encounter 504 Gateway Timeout errors when trying to access mysignins.microsoft.com.”.
Once Microsoft acknowledged the problem, it moved to reduce the blast radius. In the admin center, the company said it had switched to alternative healthy infrastructure. “We’ve completed mitigation actions, including failing over to alternate infrastructure, and are continuing to monitor service health,” Microsoft shared. It added that it is monitoring service telemetry to ensure a full recovery.
The incident is still not over. With elevated error rates persisting. Microsoft said it is evaluating additional mitigation options. including “optimizing how service requests are processed to further stabilize the service.” The company has not yet said which regions are affected. but it did confirm the issue around 5 AM ET and classified it as an ongoing incident—an internal label typically reserved for critical service problems with noticeable user impact.
This isn’t Microsoft’s only recent run-in with service disruptions. Earlier this year. the company resolved a known issue that prevented some Microsoft Teams Free users from chatting and calling others. and an Outlook.com outage that prevented customers from accessing their mailboxes due to intermittent signing-in issues.
For users trying to turn on MFA or complete sign-in setup, the timing of this latest incident matters. The outage doesn’t just inconvenience access—it strikes at the very workflow meant to harden accounts, leaving customers staring at a timeout error as Microsoft works through recovery steps.
Microsoft outage MFA multi-factor authentication My Sign-Ins mysignins.microsoft.com 504 Gateway Timeout MO1329260 Microsoft 365 Status
So Microsoft broke the thing that protects accounts… cool cool.
I saw the 504 and thought my wifi was trash lol. But if it’s the MFA setup too, that’s kinda terrifying. Why can’t they just fix it in an hour like the rest of the internet.
Wait, does this mean people can’t even sign in at all? My sign-ins is like the whole dashboard right? If MFA can’t be set up then wouldn’t that let hackers get in easier or something, because you can’t require it. Idk I’m probably misunderstanding, but this sounds bad.
This is why I still don’t trust the cloud. One minute it works, next minute 504 gateway timeout, and you’re stuck staring at a screen like it’s 2010. They say they switched to alternate infrastructure but the error rates are still elevated?? Also they don’t mention regions so I’m just guessing it’s everywhere. Reminds me of that Teams outage too.