When you see the error “Copilot couldn’t process your request” in Microsoft 365 apps like Word, Excel, or Teams, your work stops. This error means Copilot cannot complete the action you asked for. The root cause is often a temporary network glitch, a missing or expired license, or a conflict with a browser extension or add-in. This article explains why the error occurs and gives you step-by-step fixes to get Copilot working again.
Key Takeaways: Fixing the Copilot Request Error
- Check your Microsoft 365 license: Copilot requires a Copilot for Microsoft 365 or Copilot Pro subscription. Verify in account.microsoft.com/services.
- Refresh or restart the app: A quick refresh in your browser or restart of the desktop app clears temporary glitches that block Copilot.
- Clear browser cache and cookies: Stale cached data can prevent Copilot from authenticating. Clear them in your browser settings.
Why Copilot Displays the Processing Error
The error “Copilot couldn’t process your request” appears when Copilot cannot complete a natural language request. This can happen for several technical reasons. The most common cause is a network interruption between your device and the Microsoft 365 cloud services that power Copilot. Another frequent reason is an expired or misconfigured Copilot license. If your subscription lapsed or your admin did not assign the correct license, Copilot will not function. A third cause is a conflict with browser extensions, especially ad blockers or privacy tools, that block the scripts Copilot needs to run. Finally, using an outdated version of the Microsoft 365 app can cause compatibility problems with the Copilot service.
Network and Connectivity Issues
Copilot sends your request to Microsoft servers for processing. If your internet connection is slow, unstable, or blocked by a firewall or proxy, the request may time out or fail. Corporate networks with strict security policies can also block the domains Copilot uses.
License and Authentication Problems
Copilot is a paid add-on. If your subscription is not active or your user account is not properly authenticated, Copilot will not process requests. This includes cases where your session token has expired or your account was signed out.
Browser or App Conflicts
Browser extensions that block scripts, cookies, or cross-site tracking can interfere with Copilot. In desktop apps, corrupted cache files or outdated add-ins can cause similar failures.
Steps to Fix the Copilot Request Error
Follow these steps in order. Test Copilot after each step to see if the error is resolved.
- Refresh the page or restart the app
In your browser, press F5 or click the refresh button. In a desktop app like Word or Teams, close the app completely and reopen it. This clears temporary state that may be causing the failure. - Check your internet connection
Open a new browser tab and go to a website like bing.com. If the site does not load, your internet is down. Restart your modem and router. If you are on a corporate network, contact your IT team to confirm that the domainscopilot.microsoft.comandoffice.comand all subdomains are allowed. - Verify your Copilot license
Go to account.microsoft.com/services and sign in with your work or school account. Look for Copilot for Microsoft 365 or Copilot Pro in your subscription list. If it is missing or shows as expired, renew your subscription or contact your admin to assign the license. - Sign out and sign back in
Click your profile picture in the top-right corner of the Microsoft 365 app. Select Sign out. Close the app, reopen it, and sign in again. This refreshes your authentication token. - Clear browser cache and cookies
In your browser settings, find the option to clear browsing data. Select Cached images and files and Cookies and other site data. Set the time range to All time. Click Clear data. Restart the browser and try Copilot again. - Disable browser extensions
Open your browser’s extension or add-on manager. Temporarily disable all extensions, especially ad blockers, privacy tools, and script blockers. Restart the browser and test Copilot. If the error disappears, enable extensions one by one until you find the culprit. - Update the Microsoft 365 app
In Word or Excel, go to File > Account > Update Options > Update Now. In Teams, click your profile picture > Check for updates. Install any available updates and restart the app. - Repair the Microsoft 365 installation
Open Control Panel > Programs and Features. Select Microsoft 365 and click Change. Choose Quick Repair and follow the prompts. If the error persists, run an Online Repair.
If Copilot Still Has Issues After the Main Fix
Some scenarios require additional steps. Here are related failure patterns and their fixes.
Copilot Returns “Something Went Wrong” Instead of the Processing Error
This generic error often means the Copilot service is temporarily down. Check the Microsoft 365 service health dashboard at admin.microsoft.com > Health > Service Health. If Copilot is listed as degraded, wait until Microsoft resolves the issue. No local fix will work during a service outage.
Copilot Works in One App but Not Another
If Copilot works in Word but fails in Teams, the problem is likely app-specific. In Teams, clear the app cache by closing Teams, deleting the folder %appdata%\Microsoft\Teams, and restarting Teams. In Outlook, run the built-in repair tool: File > Options > Advanced > Export > Repair.
Copilot Fails Only on a Specific Document
A corrupted document can cause Copilot to fail. Copy the content to a new blank document. If the error disappears, the original file had corruption. Use the document recovery feature in Word: File > Open > Recover Unsaved Documents.
Copilot Free vs Copilot for Microsoft 365: Key Differences
| Item | Copilot Free | Copilot for Microsoft 365 |
|---|---|---|
| Availability | Bing, Edge, Windows 11 | Word, Excel, PowerPoint, Teams, Outlook, OneNote |
| License cost | $0 | $30 per user per month |
| Data grounding | Public web data | Your Microsoft Graph data (emails, files, calendar) |
| Error handling | Basic retry | Admin-controlled policies and logging |
The error “Copilot couldn’t process your request” typically occurs with Copilot for Microsoft 365 because it depends on tenant data and licenses. Copilot Free uses public web data and does not require a subscription, so the error is less common there.
You can now resolve the most common causes of the Copilot processing error: network issues, license problems, and browser conflicts. Start with the refresh and license check steps. If the error persists, clear your cache and disable extensions. For recurring failures, check the Microsoft 365 service health dashboard and update your apps. As an advanced tip, use the network trace tool in your browser’s developer tools F12 to see which domain returns a 403 or 500 error. This tells you exactly where the request is blocked.