WEEKLY BRIEFING · 13 APR – 19 APR 2026 · UTC
Public sources only
74 public updates in week 16
Microsoft published 18 Windows KB releases (12 security, 6 out-of-band). MSRC published April 2026 Security Updates. 25 roadmap changes, led by Microsoft 365 Copilot (8) and Outlook (6). CISA added 6 Microsoft CVEs to its Known Exploited Vulnerabilities catalog. 3 lifecycle milestones fall in the next 30 days. 11 Windows and security articles from Microsoft blogs.
18Windows KB releases
1MSRC release note
25Roadmap changes across 7 products
11Windows and security articles
6Microsoft CVEs added to CISA KEV
Security to act on6
- CVE-2026-32201 — Microsoft SharePoint Server Improper Input Validation VulnerabilityKEV 14 Apr
- CVE-2009-0238 — Microsoft Office Remote Code ExecutionKEV 14 Apr
- CVE-2025-60710 — Microsoft Windows Link Following VulnerabilityKEV 13 Apr
- CVE-2023-36424 — Microsoft Windows Out-of-Bounds Read VulnerabilityKEV 13 Apr
- CVE-2023-21529 — Microsoft Exchange Server Deserialization of Untrusted Data VulnerabilityKEV 13 Apr
- CVE-2012-1854 — Microsoft Visual Basic for Applications Insecure Library Loading VulnerabilityKEV 13 Apr
Windows releases18
- Windows 10, version 1607 — KB5091572 (OOB), build 14393.906219 Apr
- Windows 10, version 1809 — KB5091573 (OOB), build 17763.864719 Apr
- Windows Server 2016 — KB5091572 (OOB), build 14393.906219 Apr
- Windows Server 2019 — KB5091573 (OOB), build 17763.864719 Apr
- Windows Server 2022 — KB5091575 (OOB), build 20348.502419 Apr
13 more
- Windows Server 2025 — KB5091157 (OOB), build 26100.3269819 Apr
- Windows 10, version 1607 — KB5082198 (B), build 14393.906014 Apr
- Windows 10, version 1809 — KB5082123 (B), build 17763.864414 Apr
- Windows 10, version 21H2 — KB5082200 (B), build 19044.718414 Apr
- Windows 10, version 22H2 — KB5082200 (B), build 19045.718414 Apr
- Windows 11, version 23H2 — KB5082052 (B), build 22631.693614 Apr
- Windows 11, version 24H2 — KB5083769 (B), build 26100.824614 Apr
- Windows 11, version 25H2 — KB5083769 (B), build 26200.824614 Apr
- Windows 11, version 26H1 — KB5083768 (B), build 28000.183614 Apr
- Windows Server 2016 — KB5082198 (B), build 14393.906014 Apr
- Windows Server 2019 — KB5082123 (B), build 17763.864414 Apr
- Windows Server 2022 — KB5082142 (B), build 20348.502014 Apr
- Windows Server 2025 — KB5082063 (B), build 26100.3269014 Apr
MSRC security releases1
Windows and security news11
- Take action: Out-of-band updates released for Windows Server to address two issues19 Apr
- Interim guidance for Egypt DST changes 202617 Apr
- Announcing Windows 11 Insider Preview Build 28020.1863 (Canary Channel)17 Apr
- Announcing Windows 11 Insider Preview Build for Canary Channel 29570.100017 Apr
- Releasing Windows 11 Builds 26100.8313 and 26200.8313 to the Release Preview Channel17 Apr
6 more
- Announcing Windows 11 Insider Preview Build 26220.8271 (Beta Channel)17 Apr
- Announcing Windows 11 Insider Preview Build 26300.8276 (Dev Channel)17 Apr
- Windows news you can use: March 2026 recap15 Apr
- Remote Desktop adds new safeguards for connections opened from RDP files14 Apr
- Second deployment phase for Kerberos RC4 hardening begins with the April 2026 Windows security update14 Apr
- The April 2026 Windows security update is now available14 Apr
Lifecycle milestones in the next 30 days3
- Retirement: Azure Application Gateway v1 28 Apr
- Retirement: Custom Commands 30 Apr
- End of servicing: .NET 9 12 May
Microsoft product news19
Microsoft 365 Blog · 4
- AI is a Team Sport – Announcing our first wave of Guest Speakers at M365 Community Conference 202618 Apr
- Debugging the future of work: Microsoft 365 Community Conference 202616 Apr
- Apply sensitivity labels with custom permissions in Office for the web14 Apr
Microsoft Graph changelog · 4
- Files (v1.0): Added the height query parameter to the API to download a file in another format . (+1 more)17 Apr
- Files (v1.0): Added the List operation to the itemActivity resource.17 Apr
- Applications (v1.0): Added the approvedClientApp resource. (+1 more)16 Apr
1 more
Microsoft Purview Blog · 3
- Deploy scalable ring‑fenced Purview operations with Administrative Units18 Apr
- Data Security Posture Reports15 Apr
- Data Security Posture Reports (Custom Workspace and Charts)15 Apr
Gemini API release notes · 3
- Launched Gemini 3.1 Flash TTS Preview, our cost-efficient, expressive, and steerable text to speech model.15 Apr
- Deprecation announcement: The gemini-robotics-er-1.5-preview model will be shut down on April 30, 2026 at 9AM PST.14 Apr
- Released gemini-robotics-er-1.6-preview, our updated robotics model.14 Apr
Microsoft Graph PowerShell SDK release notes · 1
Azure Virtual Desktop Blog · 1
Azure Governance and Management Blog · 1
OpenAI API changelog · 1
Windows 365 what's new · 1
Microsoft 365 roadmap25
Microsoft 365 Copilot · 8
- Microsoft Copilot (Microsoft 365): Generative-AI skills for Create in Microsoft 365 Copilot app for Government Clouds13 Apr
- Microsoft Copilot (Microsoft 365): Intelligent meeting recap can summarize content shared on screen13 Apr
- Microsoft Copilot (Microsoft 365): Overview of recent comments and changes in Word, Excel, PowerPoint13 Apr
5 more
- Microsoft Copilot (Microsoft 365): Researcher Agent for GCC13 Apr
- Microsoft Copilot (Microsoft 365): Rich Bing web answer cards on M365 Copilot13 Apr
- Microsoft Copilot (Microsoft 365): See a summary from Copilot of the latest changes and comments in the Word, Excel, and PowerPoint backstage view.13 Apr
- Microsoft Copilot (Microsoft 365): Updated Copilot Notebooks UX13 Apr
- Microsoft Copilot (Microsoft 365): Upload Local Files now Support .eml and .msg file types13 Apr
Outlook · 6
- Outlook: Save calendar events as .ics17 Apr
- Outlook: Prepare for meetings with Copilot in classic Outlook for Windows15 Apr
- Outlook: Scheduling with Copilot chat in classic Outlook for Windows15 Apr
3 more
Viva · 4
- Microsoft Viva: Copilot Dashboard - Broader access to M365 Copilot Chat insights15 Apr
- Microsoft Viva: [Engage] More for you feed when opening posts14 Apr
- Microsoft Viva: Copilot Analytics: Copilot adoption PBI version update including Power user insights.13 Apr
Purview · 3
- Microsoft Purview: Data Security Posture Management for AI: Fabric integration in Data Risk Assessment17 Apr
- Microsoft Purview: Information Protection– Override manually applied labels and Remove labels with Auto-labeling14 Apr
- Microsoft Purviewl: Data Lifecycle Management – Separate Retention policies for Copilots and AI Apps13 Apr
3 more products · 4 changes
OneDrive · 2
- OneDrive: Improved finding and browsing document libraries on iPhone and iPad16 Apr
- OneDrive: Improved Shared file experience on iPhone and iPad15 Apr
Excel · 1
Teams · 1
Every line opens its detail page or the original Microsoft source. This briefing uses public sources only and says nothing about your tenant or devices.