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Microsoft asks iPhone users to reauthenticate after Outlook outage

ID: 4381da39-d0ca-525e-b3c5-18d220f3fbed

STIX ID: report--4381da39-d0ca-525e-b3c5-18d220f3fbed

Feed Name: Bleeping Computer

Threat Score
0/100

Date Published: 2026-04-28

Date Updated: 2026-04-28

Author: Sergiu Gatlan

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Microsoft resolved a global Outlook.com sign‑in outage causing intermittent login failures and sign‑outs; iPhone users must manually re-enter credentials in the default Mail app to regain access. The company attributed the issue to a recent change, restored service, provided step‑by‑step recovery instructions, and did not disclose the root cause, affected regions, or user counts.

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