ChangeIntelIT change radar
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Some sources, documents or advisories need attention: 271/272 feeds/APIs · 469/469 docs · 8/9 advisories · checked 16:49 UTC Customize Public modeDiscuss ChangeIntel on Discord

Weekly briefing

Week 1 · 29 Dec – 4 Jan 2026 UTC · assess the changes, then plan the next dates.

What to assess first

29 Dec – 4 Jan · dates to 3 Feb Check coverage

Act on1

  1. Known issueJan 2026

    [WORKAROUND] Error opening encrypted emails from classic Outlook: "Configuring your computer for Information Rights Management"

    Classic Outlook known issues

Coming up8

  1. Message Center action dateDue 7 Jan 2026

    MC1193408: (Update)Action Required: Trust DigiCert Global Root G2 Certificate Authority for using Entra services by January 7, 2026Microsoft 365 Message Center Archive by Merill Fernando

  2. Message Center action dateDue 11 Jan 2026

    MC1187397: Microsoft Defender for Endpoint: Threat actor attribution information will be removed from alert pageMicrosoft 365 Message Center Archive by Merill Fernando

  3. Message Center action dateDue 12 Jan 2026

    MC1164375: Retirement of "When Sending a Message" Group Policy in Classic Outlook for WindowsMicrosoft 365 Message Center Archive by Merill Fernando

  4. Patch TuesdayScheduled for 13 Jan 2026

    Patch Tuesday, 13 January 2026

    The second Tuesday of the month, when Microsoft releases security updates for Windows, Office, and servers.

  5. End of supportDue 13 Jan 2026

    End of support: 3 products

    Advanced Threat Analytics 1.X; Dynamics CRM 2016 (Dynamics 365); Visual Studio 2022 , Version 17.10 (LTSC channel)

    Same day: Message Center action date: MC1186368: Microsoft SharePoint: Update to custom scripting governance in App Catalog site

  6. CISA KEV deadlineDue 28 Jan 2026

    Microsoft Office PowerPoint Code Injection Vulnerability

    CVE-2009-0556

  7. Message Center action dateDue 30 Jan 2026

    MC1158908: (Update)Support for Events from email in Outlook is changing—Schema.org markup required for reliable calendar extractionMicrosoft 365 Message Center Archive by Merill Fernando

    Same day: Message Center action date: MC1184649: Microsoft SharePoint: Retirement of IDCRL authentication protocol and enforcement of OpenID Connect and OAuth protocols

  8. Message Center action dateDue 31 Jan 2026

    MC1146823: Microsoft Whiteboard: Azure to OneDrive migration progress updateMicrosoft 365 Message Center Archive by Merill Fernando
How this list is chosen

Changes from 29 Dec 2025 – 4 Jan 2026 UTC and dates due up to 3 Feb 2026. Dates are the source's own, or labelled as the day ChangeIntel observed a change; never inferred effective dates.

Ranked by kind: exploited vulnerabilities, then up to 7 dates, open known issues, and other notable changes, with at most one entry per feed. Service incidents are on the status board; security baseline downloads, first captures of a document, and metadata-only documentation checks are left out. This is a view of retained evidence, not a reconstruction of everything known at the time.

The briefing is selective. Browse every dated change, review upcoming dates or check the period's coverage.

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 27 Oct 16:49 UTC · 271 of 272 readable · 269 fully read · documentation 469/469 current

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