MC1194479: Windows Office Hours: December 18, 2025
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Windows
No access to your tenant or devices. Every item links to its source. What this means
Week 50 · 8 Dec – 14 Dec 2025 UTC · assess the changes, then plan the next dates.
Message CenterWindows
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Windows
Message CenterMicrosoft 365 Message Center Archive by Merill Fernando
Message Center · Plan for change · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 suite
Microsoft marks it a major change
SecurityCloudflare
Security advisory · Cloudflare WAF changelog
Release notes name CVE-2025-55182
CommunityPractical365
Community post · Practical365
Updates and guidanceGoogle Gemini
Message CenterDefender
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Defender XDR
Message CenterDynamics 365
Message CenterPurview
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Purview
Message CenterSharePoint
Message Center · Plan for change · Microsoft 365 Message Center Archive by Merill Fernando
SharePoint Online
Message CenterTeams
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Teams
Message CenterViva2 source records
Notice updated · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 suite, Microsoft Viva
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft Viva
Message CenterWindows
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Windows
ReleasesMicrosoft Graph PowerShell SDK
Tool release · Microsoft Graph PowerShell SDK release notes
ReleasesVisual Studio Code
New version · GitHub release record · package availability may differ
SecurityGitLab
Security advisory · GitLab patch releases
Message CenterMicrosoft 365 Apps
Message Center · Plan for change · Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 apps
Microsoft marks it a major change
Message CenterWindows
Message Center · Stay informed · Microsoft 365 Message Center Archive by Merill Fernando
Windows
Microsoft marks it a major change
ReleasesWindows / Windows Server3 source records
Security release
Windows 10, version 1607, Windows Server 2016
Monthly security release
Security release
Windows 10, version 1809, Windows Server 2019
Monthly security release
Security release
Windows 11, version 24H2, Windows 11, version 25H2, Windows Server 2025
Monthly security release
ReleasesWindows Server
Security release
Windows Server 2022
Monthly security release
ReleasesWindows2 source records
Security release
Windows 11, version 23H2
Monthly security release
Security release
Windows 10, version 21H2, Windows 10, version 22H2
Monthly security release
SecurityMicrosoft Security Update Guide
MSRC release notes · Microsoft Security Update Guide
Monthly security release notes
SecurityWindows
Added to CISA KEV
CVE-2025-62221
CISA lists it as exploited
CommunitySander Berkouwer's DirTeam blog
Community post · Sander Berkouwer's DirTeam blog
Updates and guidanceGoogle Gemini
Product news · Gemini API release notes
Groups collect records about the same product or named security topic on one UTC date. Open a record for its source and history; grouping alone does not establish a shared cause or impact.