How to Sign Out of Microsoft Copilot on Any Device

Signing out of Microsoft Copilot is necessary when switching accounts, troubleshooting authentication errors, or removing a personal account from a shared machine. The sign-out process differs depending on whether you use Copilot through the Windows app, a web browser, or a Microsoft 365 application. This guide walks you through every method so you can disconnect your account cleanly and avoid lingering session data.

Prerequisites for Copilot Sign Out

Before signing out, gather the following:

• Microsoft account credentials for the account you want to re-authenticate with later, since signing out clears your saved session
• Access to the device where Copilot is active — you cannot remotely sign out of Copilot from another machine without using your Microsoft account security dashboard
• Saved work or chat history you need to keep, because Copilot does not retain local conversation history after sign-out on most platforms

Sign Out of Microsoft Copilot on Desktop

Remove Your Account from the Copilot Windows App

Open the Microsoft Copilot app from the Start menu or taskbar. Click your profile icon in the top-right corner of the Copilot window. Select Sign out from the dropdown menu. Windows will clear your active Copilot session and return the app to its signed-out state. If the profile icon does not appear, you may be using Copilot without an account, which requires no sign-out action.

Sign Out Through Windows Account Settings

When the Copilot app does not offer a direct sign-out button, disconnect through Windows itself. Navigate to Settings >> Accounts >> Your info and look for the Microsoft account linked to Copilot. Click Sign in with a local account instead if you want to fully disconnect your Microsoft identity from the device. This approach removes Copilot access along with other Microsoft services tied to that account, so use it only when you want a complete disconnection. Revert by signing back in with your Microsoft account at any time.

Clear Copilot Data from Microsoft Edge

Copilot integrates directly into the Edge sidebar, and signing out of one does not always sign you out of the other. Open Edge, click the three-dot menu, then go to Settings >> Profiles. Select your profile and click Sign out. To remove cached Copilot data, navigate to Settings >> Privacy, search, and services >> Clear browsing data and select Cookies and other site data. This forces a fresh authentication the next time you open Copilot in Edge.

Troubleshooting Copilot Sign-Out Issues

Fix Persistent Sign-In After Logging Out

Some users find that Copilot automatically signs them back in after a logout. This happens because Windows caches Microsoft account tokens across apps. Open Settings >> Accounts >> Email & accounts and remove any work or school accounts that auto-authenticate Copilot. You can also open the Credential Manager from the Control Panel, select Windows Credentials, and delete any entries related to login.microsoftonline.com or copilot.microsoft.com. Clearing these stored credentials prevents the automatic re-authentication loop. If sign-in problems persist after these steps, you may need to fix Copilot authentication problems by resetting your Microsoft account connection entirely.

Sign Out of Copilot in Microsoft 365 Apps

Copilot embedded in Word, Excel, Outlook, and Teams uses your Microsoft 365 organizational account. You cannot sign out of Copilot independently within these apps — it follows your Office account session. To disconnect, open any Office app, click your profile icon in the title bar, and select Sign out. This signs you out of all Microsoft 365 apps simultaneously. Your IT administrator may also control Copilot access through Entra ID policies, meaning signing out may not fully disable Copilot features until the license is reassigned.

Advanced Copilot Account Management

Switch Between Microsoft Accounts in Copilot

Copilot supports both personal Microsoft accounts and work or school accounts, but it only uses one at a time. To switch accounts, sign out first using the profile menu, then sign back in with the alternate account. On devices where multiple accounts are registered in Windows, Copilot may prompt you to choose which account to use at sign-in. If the prompt does not appear, remove the unwanted account from Settings >> Accounts >> Email & accounts so only your preferred account remains available. When Copilot behaves unexpectedly after an account switch, try restarting the app to clear the previous session state. You can also resolve Copilot not responding errors if the app freezes during the account transition.

Revoke Copilot Access from Your Microsoft Account

For a complete disconnection, revoke Copilot permissions from your Microsoft account security page. Go to account.microsoft.com/privacy in any browser and sign in. Navigate to App permissions and find Microsoft Copilot in the list of connected apps. Click Remove access to revoke all permissions Copilot has on your account. This does not uninstall Copilot from your device, but it prevents the app from accessing your data until you re-authorize it. Use this method when you suspect unauthorized access or want to ensure no Copilot session remains active on any device.