Thread incident

OTP Passwords not being sent

Major Resolved View vendor source →

Thread experienced a major incident on January 22, 2026 affecting Thread Inbox, Messenger, & Admin, lasting 18h 33m. The incident has been resolved; the full update timeline is below.

Started
Jan 22, 2026, 08:46 PM UTC
Resolved
Jan 23, 2026, 03:19 PM UTC
Duration
18h 33m
Detected by Pingoru
Jan 22, 2026, 08:46 PM UTC

Affected components

Thread Inbox, Messenger, & Admin

Update timeline

  1. investigating Jan 22, 2026, 08:46 PM UTC

    We are currently experiencing an issue where emails sent from our environment to recipients hosted on Microsoft 365 (including Outlook.com and Exchange Online) are being delayed or not received. If you use SSO for sign in you should be unaffected.

  2. investigating Jan 22, 2026, 08:47 PM UTC

    We are continuing to investigate this issue.

  3. investigating Jan 22, 2026, 08:59 PM UTC

    We have verified email addresses not hosted by Microsoft are unaffected and are able to sign in as usual

  4. investigating Jan 22, 2026, 09:10 PM UTC

    You can monitor the outage here https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect.

  5. resolved Jan 23, 2026, 03:19 PM UTC

    This incident has been resolved.