When you open an Excel file protected by a Microsoft Purview Information Protection sensitivity label, Copilot may behave differently than it does on unlabeled files. Copilot cannot read, summarize, or generate content from cells that are restricted by a label that applies encryption or permissions. This article explains exactly what happens when you try to … Read more
You want to ask Copilot a question that needs data from two or more open Excel workbooks. By default, Copilot in Excel works on the active sheet or table in the current workbook. It cannot natively query across separate files. This article explains the current limitations and shows you the practical workarounds to combine data … Read more
Business users often ask whether Copilot runs faster in Excel for the web or in the Excel desktop app. The answer depends on hardware, data size, and network conditions. Excel Desktop uses your local CPU and RAM directly, while Excel Web relies on cloud servers and your internet connection. This article compares the performance of … Read more
When a formula in Excel returns a #REF! error or a broken reference, it can stop your entire spreadsheet from calculating correctly. These errors often appear after you move, delete, or rename cells, worksheets, or external workbooks that a formula depends on. Copilot in Excel can analyze your formulas and identify the exact source of … Read more
Copilot in Excel helps you analyze data, generate formulas, and create charts using natural language prompts. However, Copilot cannot read or process any data from encrypted workbooks. When you open a password-protected or encrypted Excel file, Copilot remains inactive and shows an error message in the Copilot pane. This limitation is by design to protect … Read more
You want to use Copilot directly inside Outlook Mobile on your Android phone to draft emails, summarize long threads, or prepare replies without switching apps. Copilot in Outlook Mobile connects to your Microsoft 365 account and uses your mailbox data to generate responses based on your writing style and the conversation context. This article explains … Read more
You open an email in Outlook on your iPhone or iPad and expect to see the Copilot Summarize button. Instead, the button is grayed out or completely missing. This problem usually occurs because your Microsoft 365 license lacks the Copilot feature, or because the app version does not support the button yet. This article explains … Read more
When you have delegated access to another person’s mailbox in Outlook, you may want Copilot to summarize emails, draft replies, or find information in that shared folder. By default, Copilot in Outlook only works with your own mailbox because it reads data from your primary Microsoft Graph connection. This article explains how to configure Copilot … Read more
You have Copilot enabled in Outlook, but it fails to summarize or reply to encrypted email threads. This happens because Copilot cannot decrypt or access encrypted message content. Microsoft 365 Message Encryption protects the email body and attachments, and Copilot currently has no permission to read that protected data. This article explains why Copilot is … Read more
You want to send a calendar invite with a clear agenda but you are short on time. Copilot in Outlook can draft the entire invite body based on your short prompt or a linked document. It reads the meeting purpose you describe and generates a structured agenda with bullet points and a time estimate. This … Read more