GCC High Priority Update
Week of October 22, 2026
Microsoft is extending Copilot Chat to shared and delegate mailboxes in Outlook for GCC High and DoD environments, allowing users who manage or work from shared inboxes to access Copilot assistance without switching to a personal mailbox. This update closes a meaningful gap for organizations where shared mailboxes handle high-volume communication — support queues, legal inboxes, executive delegate accounts — where Copilot’s drafting and summarization capabilities are equally valuable. The feature is currently in development and expected to begin rolling out in November 2026.
Update Archives
GCC High M365 Roadmap Updates
Find out what’s coming, what’s going, and what it means for you and your operations. View all Microsoft 365 GCC High roadmap updates for the week of October 22, 2026.
Microsoft Dataverse: Prompt column values in bulk for existing records (backfill)
Prompt columns can now generate AI values for records that already exist in your table, not just new or updated ones. Makers can choose to apply a prompt to existing records in bulk, optionally filtered to just the rows they need, so historical data gets the same AI-generated insights as incoming data, without touching each record one at a time.
ID: 570865 Release: Power Apps, Microsoft Dataverse, Microsoft Power Platform governance and administration – Worldwide (Standard Multi-Tenant), GCC, GCC High Tags: November CY2026
Microsoft Purview: Adaptive Scope evaluation control with recipient and site owner lifecycle status
Microsoft Purview Adaptive Scopes will provide administrators with explicit control over lifecycle-state evaluation for recipients and site owners, helping ensure policy targeting and scope membership remain aligned with organizational requirements.
ID: 572676 Release: Microsoft Purview – GCC, GCC High, DoD Tags: January CY2027
Power Pages: Create Power Pages SPA site from the Power Pages studio
Quickly get started with modern single-page application (SPA) development by creating a site directly from Power Pages Studio. Continue building and customizing your experience using your preferred development tools and frameworks.
ID: 573277 Release: Power Pages – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: November CY2026
Power Apps: Prompt Columns – multiple lines of text output
Prompt columns can now store multilple lines of text as prompt output, enabling longer and detailed AI-generated insights to be stored in your tables.
ID: 573279 Release: Power Apps, Microsoft Dataverse – Worldwide (Standard Multi-Tenant), GCC, GCC High Tags: November CY2026
Outlook: Copilot Chat available in shared and delegate mailboxes
Shared mailbox users and delegates with read and manage (full access) and/or mail folder-level permission will now be able to access Copilot Chat directly from their shared and delegate mailboxes in classic Outlook, when added as a resource.
ID: 573698 Release: Outlook – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: November CY2026
Microsoft Teams: View files and conversations side by side
Review shared files without losing conversation context. When you open a PDF, Markdown, or HTML file from a Teams chat or channel message, the conversation appears alongside the file and takes you directly to where it was shared, allowing you to catch up on the discussion and respond without closing the file preview or switching back to chat.
ID: 574094 Release: Microsoft Teams – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: November CY2026
Power Apps: Manage model-driven app AI features from consolidated settings
Consolidated AI settings make it easier for makers and admins to find and manage AI capabilities for model-driven apps across two complementary surfaces. In Maker Studio, the Settings dialog in the model app form designer adds a new top-level Copilot and AI tab. Makers can see and adjust all available AI options for the app in one place instead of finding them scattered among all the other settings. In the Power Platform admin center, model-driven app AI settings are consolidated from Environment ; Settings into Copilot Hub ; Power Apps. This provides a central location for settings such as Generative pages, Copilot in apps, and the in-app AI skills. The in-app skill settings are organized into these groups: Data entry: Form fill assistance. Summary: Row summaries. Data analysis: AI-generated charts and natural-language search and filtering. Labels and descriptions are aligned across Maker Studio and Copilot Hub so makers and admins can understand how the controls relate. As part of this consolidation, the old model-driven app AI switches under Environment ; Settings will also be retired and removed. Availability Applies to Model-driven apps Release Channel Weekly Version 2610.3 Feature Scope Admins or makers
ID: 574104 Release: Power Apps – Worldwide (Standard Multi-Tenant), GCC, GCC High Tags: October CY2026
Microsoft Purview: Information Protection – Apply default SharePoint library labels to data at rest
Enables auto-labeling of existing SharePoint files to match the default sensitivity label configured on their document library. This helps organizations close labeling gaps for data at rest and ensure consistent, secure-by-default protection across SharePoint libraries—without relying on manual user labeling.
ID: 575283 Release: Microsoft Purview – GCC, GCC High, DoD Tags: November CY2026
SharePoint: Agent chat web part
This is a new web part available for modern page editors in SharePoint. The web part can be configured to use any M365 Copilot agent.
ID: 575298 Release: SharePoint – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: January CY2027
Power Apps: Access updated visuals for row summaries across forms and views
The row summaries experience has a refreshed layout that makes AI-generated insights more prominent and easier to consume. Improved visual hierarchy (including clearer spacing, background and border treatments, status indicators, and generation labels) helps summaries stand apart from surrounding form sections so users can quickly identify key information. The visual treatment takes inspiration from similar AI-powered experiences in Microsoft 365 apps, creating a more recognizable and consistent presentation for AI-generated content. It also establishes a foundation for bringing insights from multiple sources into a unified summary experience over time. Microsoft-provided summaries from Dynamics 365 applications, including Customer Service and Sales, are also available directly from model-driven app view pages. Users can access relevant insights while browsing records in a grid without opening each record individually. Availability Field Value Release Channel Weekly Version 2610.2 Applies to Model-driven apps Feature Scope Users (always enabled)
ID: 576178 Release: Power Apps – Worldwide (Standard Multi-Tenant), GCC, GCC High Tags: October CY2026
Microsoft Teams: Pinch to zoom in on shared screens
Get a closer look at shared content in Teams calls and meetings with pinch-to-zoom using your touchpad. Quickly zoom in to make small text and detailed visuals easier to see, then zoom back out for the full view. Existing zoom controls remain available.
ID: 576193 Release: Microsoft Teams – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: November CY2026
OneDrive: PDF annotation for sensitivity-label protected PDFs in OneDrive/SharePoint web viewer
We’re enabling PDF annotation for sensitivity-label protected PDFs in OneDrive and SharePoint on the web. With this update, users who have the appropriate usage rights can annotate these protected PDFs in place in their browser while preserving the file’s sensitivity label, encryption, and usage rights when changes are saved.
ID: 576276 Release: OneDrive, SharePoint – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: January CY2027
Microsoft Teams: Improved organization for muted and meeting chats
Microsoft Teams automatically organizes your chats with new built in sections that help reduce clutter and keep conversations easy to find. Muted chats (on by default) are grouped together in a dedicated area, while meeting chats (off by default) can be collected into a single section for quick access. You’re always in control, as each section can be turned on or off based on your preferences. The new Meeting chats section will replace the Meeting chats filter, that was previously available at the top of the chat and channel list. Updated July 20, 2026: We have temporarily rolled back this feature. We apologize for any inconvenience.
ID: 559605 Release: Microsoft Teams – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: October CY2026
Microsoft Purview: Insider Risk Management – Enhanced user profile in IRM alerts
We’re enhancing the User section within Insider Risk Management alerts to provide investigators with more contextual user profile and risk attributes directly within their workflow. With this update, analysts can now view key user details such as employee type, office location, start date, policy inclusion, priority user group status, and last working day—helping them build a more complete understanding of the user during investigations without navigating away from the alert experience. This feature will be available as part of the new alert workflow through the Alert Details panel. Additional user attributes will continue to be introduced over time, with pseudo-anonymization honored to support privacy-by-design investigation practices. Microsoft Purview Insider Risk Management correlates various signals to identify potential malicious or inadvertent insider risks, such as IP theft, data leakage, and security violations. Insider Risk Management enables customers to create policies based on their own internal policies, governance, and organizational requirements. Built with privacy by design, users are pseudonymized by default, and role-based access controls and audit logs are in place to help ensure user-level privacy.
ID: 564619 Release: Microsoft Purview – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: October CY2026
Microsoft Purview: Insider Risk Management – Expanding note capabilities across alerts & cases
We’re introducing a new collaboration capability in Insider Risk Management that enables analysts and investigators to add notes directly within alerts. With this feature, users can document investigation progress, share findings, and capture key context throughout the triage process. In addition to manually added notes, system-generated notes will automatically record updates such as alert status changes or user assignments — helping teams maintain a clear and auditable investigation timeline. By centralizing investigation history directly within alerts, this update helps improve collaboration and ensures all stakeholders stay aligned throughout the investigation lifecycle. These note enhancements will also be made available in Cases. Microsoft Purview Insider Risk Management correlates various signals to identify potential malicious or inadvertent insider risks, such as IP theft, data leakage, and security violations. Insider Risk Management enables customers to create policies based on their own internal policies, governance, and organizational requirements. Built with privacy by design, users are pseudonymized by default, and role-based access controls and audit logs are in place to help ensure user-level privacy.
ID: 564620 Release: Microsoft Purview – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: October CY2026
Power Apps: Modern, refreshed look for the mail app
Extends the Fluent-based modern, refreshed look for model-driven apps to the mail app, providing consistent controls, spacing, colors, and visual treatment when users work in that app. This was previously enabled for the monthly channel with the 2602.1 release and is now being enabled for the semiannual channel with the 2609.3 release. Availability, Impacted products, All model-driven apps, Release channel, Semiannual, Version, 2609.3 build, Dependencies, Feature activation, Default on
ID: 571681 Release: Power Apps – Worldwide (Standard Multi-Tenant), GCC, GCC High Tags: October CY2026
Power Automate: Schedule desktop flows directly with Scheduled Triggers
Scheduled triggers enable makers to run desktop flows on a recurring schedule directly from the Power Automate automation center, eliminating the need to create and manage intermediary scheduled cloud flows. Users can configure daily, weekly, monthly, hourly, or custom recurrence patterns, select the execution machine or machine group, and monitor upcoming scheduled runs from a centralized experience. Scheduled Triggers simplify desktop automation management and provide a more intuitive scheduling experience for attended and unattended desktop flows.
ID: 573278 Release: Power Automate – Worldwide (Standard Multi-Tenant), GCC, GCC High, DoD Tags: October CY2026