Story perspectives

Microsoft Reverses Change After Outlook.com Sign-In Outage

4/28/2026

Summary

Story summary

Microsoft rolled back a configuration change on Monday, April 27, after Outlook.com sign-in failures.
The issue began just before 5 a.m. ET, with Downdetector logging about 1,500 reports and 1,100 submissions by 8:50 a.m. ET.
Users saw “too many requests” errors, unexpected sign-outs and iOS lockouts, prompting some to re-enter passwords in iPhone Settings.
By 3:36 p.m. ET the service appeared to recover, prompting Microsoft to advise monitoring the Microsoft 365 Status X account for updates.

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Story summary

Microsoft rolled back a configuration change on Monday, April 27, after Outlook.com sign-in failures.
The issue began just before 5 a.m. ET, with Downdetector logging about 1,500 reports and 1,100 submissions by 8:50 a.m. ET.
Users saw “too many requests” errors, unexpected sign-outs and iOS lockouts, prompting some to re-enter passwords in iPhone Settings.
By 3:36 p.m. ET the service appeared to recover, prompting Microsoft to advise monitoring the Microsoft 365 Status X account for updates.