Microsoft Microsoft 365 Apps Monthly Enterprise Channel Update Version Version 2603 (Build 19822.20180)

Version 2603 (Build 19822.20180) adds Copilot editing and refinement in PowerPoint for Microsoft 365 Copilot users. It also includes security updates and fixes for Outlook accessibility, PowerPoint stability, and Word Copilot drafting behavior.

• Security updates included in this release.

• Fixed an issue where some add-ins did not display a banner/info bar when an external recipient was added to an outgoing email in Outlook.
• Fixed an issue where users could not close the Copilot chat pane using a keyboard in Outlook.
• Fixed an issue that sometimes caused PowerPoint to close unexpectedly when opening a newly created empty file from the OneDrive folder.
• When drafting with Copilot in Word, the Copilot chat pane now opens with the user's prompt.

• Copilot in PowerPoint can create, edit, and refine presentations through natural conversation.
• Copilot can generate slides, update content, improve layouts, and polish design while preserving formatting, structure, and branding.
• Copilot can use a brand kit to apply branded templates, insert approved images, and check brand compliance.

• Available to Microsoft 365 Copilot-licensed users.

Product Information

Vendor: Microsoft

Product: Microsoft 365 Apps

Version: Version 2603 (Build 19822.20180)

Release date: Apr 14, 2026