Official documentation checked October 14, 2026. Copilot access to a shared mailbox depends on the Copilot experience and the user’s existing mailbox or folder permissions. Outlook auto-mapping is a convenience for opening a mailbox in a profile; it is not a separate Copilot authorization registration. Do not remove existing permissions or convert mailbox types merely … Read more
Official documentation checked October 14, 2026. Copilot can help draft a message while you work with a shared or delegated mailbox, where that experience is supported. Permission to draft or read mailbox content and permission to send on behalf of the owner are separate. There is no documented Copilot account selector that turns a draft … Read more
When you use Copilot in Outlook to compose an email, it can automatically insert your email signature at the bottom of the message. If you manage multiple email accounts in the same Outlook profile, you may notice that Copilot inserts the signature from your default account rather than the account you are sending from. This … Read more
You need Copilot to summarize or draft replies in an Outlook thread that contains S/MIME signed messages. S/MIME signing applies cryptographic protection, which can block Copilot from reading the email body content. This article explains why S/MIME signed threads cause Copilot to fail and how to configure Outlook and Microsoft 365 to let Copilot process … Read more
You are composing an encrypted email in Outlook and want Copilot to help draft, summarize, or suggest replies. But Copilot may not work as expected when Microsoft Purview Message Encryption is active. This behavior occurs because encryption restricts how Copilot reads and processes email content to protect sensitive data. This article explains exactly what happens … Read more
When Copilot in Outlook misses an older message, first establish where that message is and whether the particular Copilot feature supports that mailbox. Do not extend retention, exempt a folder or automatically copy email just to make a summary work. Those changes can undermine an organization’s approved disposal and preservation requirements. This guide separates mailbox … Read more
Users who rely on Copilot in Outlook often switch between Outlook on the Web and the new Outlook for Windows app. They notice that some Copilot features appear in one version but not the other. This gap causes confusion about which commands are available in each client. This article provides a direct feature-by-feature comparison of … Read more
When you work on a document that contains text in two or more languages, Copilot in Word may produce suggestions that mix languages incorrectly or apply the wrong spelling and grammar rules. This happens because Copilot detects the dominant language of the document and applies that language model to all content, even when you have … Read more
Writing equations in Microsoft Word often requires navigating the Insert tab or memorizing LaTeX syntax. Many users describe an equation in plain English and then spend time formatting it manually. Copilot in Word can convert your natural language description into a formatted equation directly in your document. This article explains how to use Copilot to … Read more
You want Copilot to automatically generate a table of contents or an index for your Word document. Copilot can create a table of contents from your headings, but it cannot generate a true index that lists specific terms and page numbers. The root cause is that Copilot works on the semantic content of your document … Read more