Try these steps in order:
- Run the Copilot troubleshooter in Get Help.
- Open Get Help.
- In the search box, enter Copilot connectivity troubleshooter if Copilot opens but stays blank or cannot connect.
- Also run Copilot License Troubleshooter if the issue may be related to subscription validation.
- Follow the prompts and review the findings.
- If this is Copilot on Windows, remove and reinstall the app.
- Windows 11: Settings > Apps > Installed apps > search for Copilot > … > Uninstall.
- Windows 10: Settings > Apps > search for Copilot > Uninstall.
- Reinstall it from the Microsoft Store.
- If the blank screen is in a Microsoft 365 app such as Word, Excel, or PowerPoint, check these items:
- First look for the Copilot entry point in the lower-right corner of the document, workbook, or presentation, because the button may have moved.
- Make sure the apps are on the latest build.
- Refresh the license:
- On Mac: open any Microsoft 365 app > app name menu > About <app name> > More Info... > Refresh License.
- Then close documents and restart all Microsoft 365 apps.
- Check privacy settings:
- On Mac: Word > Preferences > Privacy.
- Turn on Experiences that analyze your content and All connected experiences.
- On the web, refresh the browser page. If needed, enable third-party cookies because blocked third-party cookies can prevent Copilot from validating the license.
- If this is classic Outlook for Windows and Copilot is missing there, use new Outlook, Outlook on the web, or create a new Outlook profile.
- If the issue continues:
- Home users: contact Support.
- Business users: check with the Microsoft 365 admin to confirm the Copilot entitlement, and the admin can contact Microsoft support if needed.
References:
- Copilot troubleshooters | Microsoft Support
- Welcome to Copilot on Windows
- How to find and enable missing Copilot button in Microsoft 365 apps | Microsoft Support
- [Mac](https://support.microsoft.com/office/foundations-experiences/how-to-find-and-enable-missing-copilot-button-in-microsoft-365-apps)
- Copilot buttons are missing in classic Outlook for Windows | Microsoft Support
- I am getting license validation errors with Copilot | Microsoft Support