If you use web add-ins in Outlook, moving from Classic Outlook to the New Outlook changes where you find and manage these tools. Web add-ins are small programs that integrate with Outlook to extend its functionality, such as adding a CRM tool, a project manager, or a grammar checker directly into your email window. In … Read more
You moved to the new Outlook for Windows and discovered that your third-party account add-ins from classic Outlook are no longer available. These add-ins, such as those for Gmail, Yahoo, or other IMAP providers, were designed for the classic Outlook architecture and do not load in the new Outlook client. This article explains why these … Read more
Classic Outlook users who manage multiple email accounts often rely on add-ins to extend functionality for each mailbox. When switching to the new Outlook, add-ins behave differently for secondary accounts, leaving some users unable to access their tools. This article explains how add-in permissions work in the new Outlook for accounts added after the primary … Read more
When you switch from Classic Outlook to the new Outlook for Windows, many familiar features move to new locations. Copilot drafting, which helps you compose email messages with AI assistance, is one of those features. In Classic Outlook, Copilot appeared as a button in the ribbon or a pop-up window. In new Outlook, the location … Read more
If you use Microsoft 365 Copilot to summarize email threads in Outlook, you may have noticed differences between the classic version and the new Outlook for Windows. The new Outlook uses a different codebase and a redesigned interface, which affects how Copilot features appear and behave. This article explains the specific changes to the Copilot … Read more
The new Outlook for Windows includes Copilot themes that change the color scheme of the interface. These themes are part of the Copilot subscription and are separate from the standard Office theme settings. Users often cannot find the theme options because the menu location differs from classic Outlook or because the Copilot license is missing. … Read more
The new Outlook for Windows does not support VBA macros. This means scripts you built to automate email sorting, message replies, or calendar tasks will not run in the new app. Microsoft designed the new Outlook on a web-based platform that cannot load the COM add-in model VBA requires. This article explains why VBA is … Read more
Many business users rely on COM add-ins to extend Outlook functionality with tools for CRM, email archiving, compliance, or productivity. Classic Outlook supports COM add-ins natively, but the new Outlook for Windows uses a different architecture that does not load COM-based extensions. This article explains the technical differences between the two Outlook versions regarding COM … Read more
Classic Outlook for Windows supports MAPI automation, which lets third-party applications and custom scripts interact directly with your mailbox, calendar, and contacts. The new Outlook for Windows, a web-based client, does not support MAPI at all. This creates a gap for users who rely on MAPI-based tools for tasks like document management, CRM integration, or … Read more
If you have VBA macros, COM add-ins, or scripts that automate Outlook tasks such as sending emails, reading calendar items, or manipulating folders, you may find that this code suddenly stops working after upgrading to the new Outlook for Windows. The root cause is a fundamental architectural change: the new Outlook replaces the classic MAPI-based … Read more