Recorded 17 Oct 2026 at 00:21 UTC. This is what ChangeIntel recorded, including the title, summary, facts and links. It is not a statement of the source's current position. See the latest record.
Windows known issueWindows release health
Users might be unable to sign in to OWA or send emails on Exchange Server
Issue reported on Exchange Server 2016, 2019, and Subscription Edition, affecting OWA sign-in and mail delivery.
What it said
- Status
- Confirmed
- Caused by
- KB5126651
- Windows versions
- Windows 10, version 1809, Windows Server 2019, Windows 10, version 1607, Windows Server 2016, Windows Server 2025, Windows Server 2022
- Status on Windows 10, version 1809
- Confirmed
- Status on Windows Server 2019
- Confirmed
- Status on Windows 10, version 1607
- Confirmed
- Status on Windows Server 2016
- Confirmed
- Status on Windows Server 2025
- Confirmed
- Status on Windows Server 2022
- Confirmed
- Updated by Microsoft
- 16 Oct 2026
Recorded links
What changed
First observed 17 Oct 2026No field changes in the recorded history.
Cite this recorded revision to keep the same title, summary, facts and links when the page changes.
A day selects the latest observation by the end of that UTC day; today's selection can change until midnight. History starts when this installation records it.