Microsoft 365 Alert – Service Degradation – Microsoft 365 suite – June 9 security update notes aren’t available on learn.microsoft.com for Microsoft 365 apps & Office – ONGOING
11/06/2026 11:03:00 AM
NHSmail Reference: INC46848835
Microsoft Reference: MO1386645
Issue Status: ONGOING
Issue Description: June 9 security update notes aren’t available on learn.microsoft.com for Microsoft 365 apps & Office.
Current Update: 11/06/2026 10:18:00 AM – Due to an issue with security update and patch note posting on learn.microsoft.com, the security notes for June 9, 2026, Security Updates for Microsoft 365 Apps and Office temporarily aren’t available. All security updates have been completed; it is only the notes that aren’t available. This post will be removed once those notes are available. The following is a list of the updated builds:
Current Channel: Version 2605 (Build 20026.20168)
Monthly Enterprise Channel: Version 2605 (Build 20026.20166)
Monthly Enterprise Channel: Version 2604 (Build 19929.20220)
Monthly Enterprise Channel: Version 2603 (Build 19822.20288)
Semi-Annual Enterprise Channel: Version 2508 (Build 19127.20678)
Office 2024 Retail: Version 2605 (Build 20026.20168)
Office 2021 Retail: Version 2605 (Build 20026.20168)
Office LTSC 2024 Volume Licensed: Version 2408 (Build 17932.20842)
Office LTSC 2021 Volume Licensed: Version 2108 (Build 14334.20756)
Office 2019 Volume Licensed: Version 1808 (Build 10417.20153)
Security update service specifics:
Word
CVE-2026-45456
CVE-2026-45457
CVE-2026-45458
CVE-2026-45466
CVE-2026-45471
CVE-2026-45486
CVE-2026-45643
CVE-2026-47635
Excel
CVE-2026-44817
CVE-2026-44818
CVE-2026-44820
CVE-2026-44822
CVE-2026-44823
CVE-2026-45455
CVE-2026-45459
CVE-2026-45469
Office suite
CVE-2026-44819
CVE-2026-44821
CVE-2026-44824
CVE-2026-45460
CVE-2026-45461
CVE-2026-45463
CVE-2026-45472
CVE-2026-45473
CVE-2026-45474
CVE-2026-45475
CVE-2026-45485
CVE-2026-45645
CVE-2026-47293
Supported Versions:
Current Channel Version 2605 Build 20026.20168
Monthly Enterprise Channel Version 2605 Build 20026.20166
Monthly Enterprise Channel Version 2604 Build 19929.2022
Monthly Enterprise Channel Version 2603 Build 19822.20288
Semi-Annual Enterprise Channel Version 2508 Build 19127.20678
Next update by: Wednesday, June 10, 2026, at 7:30 PM UTC
