Why is Copilot not working? Whether you are trying to draft an email inside Microsoft 365, open the sidebar assistant in Microsoft Edge, or launch the taskbar app on Windows 11, seeing a spinning loading circle or the dreaded “Sorry, something went wrong. Please try again in a few moments” alert is a widespread frustration in 2026. Because Microsoft Copilot relies on real-time cloud handshakes between your local WebView2 runtime, Azure OpenAI endpoints, and your Microsoft Entra ID (formerly Azure AD) or personal account license, even a minor token mismatch or regional server degradation—like the November 2026 Microsoft 365 outage—can instantly freeze the AI assistant.
If you are searching why is copilot not working while the rest of your internet connection runs smoothly, the root cause almost always falls into one of five buckets: a backend Microsoft 365 service outage, an expired Single Sign-On (SSO) license token, a corrupted Microsoft Edge WebView2 cache, a corporate Group Policy block, or a regional VPN firewall conflict. Below is the complete diagnostic table and step-by-step fix to restore Microsoft Copilot across Windows 11, Word, Excel, Outlook, and the web.
| Copilot Error Message / Symptom | Where It Happens | Exact Technical Root Cause | Primary 60-Second Fix |
|---|---|---|---|
| “Sorry, something went wrong” / Infinite Spinner | Copilot Web, Windows 11 App, or Teams | Azure OpenAI endpoint overload, Microsoft 365 outage, or blocked WebSocket port 443 | Check Microsoft Service Health, disable VPN, or clear WebView2 app cache |
| Copilot Icon Greyed Out or Missing in Ribbon | Word, Excel, PowerPoint, or Classic Outlook | Unverified Microsoft 365 Copilot license token or Disabled Connected Experiences | Go to File > Account > Update License and enable Optional Connected Experiences |
| “It looks like you’ve reached your limit” / Throttled | Copilot Pro / Free Web & Edge Sidebar | Peak-hour GPU capacity throttling or expired session cookie triggering guest limits | Sign out, clear browser cookies for copilot.microsoft.com, and sign back in |
| Copilot Opens Blank White or Black Window | Windows 11 Desktop App (Taskbar) | Outdated or corrupted Microsoft Edge WebView2 Runtime background process | End WebView2 in Task Manager and run Repair / Reset in Windows Installed Apps |
| “Copilot is disabled by your organization” | Work or School Windows 11 PC | IT Admin Group Policy (TurnOffWindowsCopilot) or European DMA regional lock | Switch from Work/School account to personal profile or contact IT administrator |
Complete 2026 Troubleshooting Matrix: Diagnosing why Microsoft Copilot is not responding across Windows 11, Office 365 apps, and web browsers.
Why Is Copilot Not Working Today? The 5 Core Technical Causes
Before changing registry keys or reinstalling Office, understanding why is copilot not working requires distinguishing between a cloud-side server bottleneck and a local device configuration conflict.
1. Microsoft 365 and Azure OpenAI Cloud Outages
Unlike offline desktop utilities, Microsoft Copilot streams every prompt through Azure cloud clusters and Microsoft Graph indexes. When Microsoft experiences authentication gateway failures or Exchange Online bottlenecks—the exact same server disruptions that trigger the Outlook red exclamation mark taskbar icon error—Copilot loses access to your workspace context and times out. You can verify active server incidents on the official Microsoft Service Health Portal before modifying local settings.
2. Corrupted Microsoft Edge WebView2 Runtime on Windows 11
Starting with recent Windows 11 updates, Microsoft converted the standalone Copilot desktop experience into a Progressive Web App (PWA) powered by the Microsoft Edge WebView2 Runtime. If a background Windows Update leaves zombie msedgewebview2.exe processes hanging in memory, or if your local browser cache becomes corrupted—similar to how cached SSL states cause the www.youtube.com refused to connect error on Edge and Chrome—clicking the Copilot taskbar icon will result in a frozen blank window or an unresponsive text box.
3. License Sync Failures and Privacy Toggle Blocks in Office 365
If Copilot works in your web browser but the Copilot button is greyed out or missing inside Word, Excel, PowerPoint, or Outlook, two settings are usually to blame. First, Microsoft 365 desktop apps require Optional Connected Experiences to be turned on under Account Privacy; if this checkbox is disabled, Office blocks all cloud AI calls. Second, if you use a personal OneDrive email alongside a corporate work email, Office may check the wrong account profile for your paid Copilot subscription.
4. VPNs, Ad Blockers, and SSL Inspection Firewalls
Copilot relies on persistent, bidirectional WebSocket streams (wss://) to type out responses token by token. Aggressive ad blockers, privacy extensions, and corporate split-tunnel VPNs frequently sever long-lived WebSocket connections or block Microsoft telemetry domains, causing Copilot to accept your question and then hang indefinitely without generating a reply.
5. Windows 11 24H2 Policy Changes and Regional DMA Restrictions
In corporate environments, IT administrators frequently deploy Group Policy or Intune scripts to disable consumer AI tools on managed devices. Furthermore, in European Economic Area (EEA) markets governed by the Digital Markets Act (DMA), Windows 11 decouples OS-level Copilot integration unless explicitly authorized by the user.
Step-by-Step: How to Fix Microsoft Copilot Not Working on Windows 11 & Office
Follow these six targeted troubleshooting steps in order to resolve why is copilot not working on your PC, browser, or Microsoft 365 suite:
Step 1: Repair and Reset the Copilot App in Windows 11 Settings
When the Windows 11 Copilot app refuses to open, freezes mid-sentence, or displays a blank screen, flushing its local app container fixes the issue in over 80% of cases:
- Press Ctrl + Shift + Esc to open Task Manager, locate Copilot (and any nested
Microsoft Edge WebView2processes underneath it), right-click, and select End task. - Right-click the Windows Start button and click Installed apps (or go to Settings > Apps > Installed apps).
- Type
Copilotinto the search bar, click the three-dot menu icon (...) on the right side of Microsoft Copilot, and select Advanced options. - Scroll down to the Reset section and click Repair first (this preserves your local sign-in state).
- If Copilot still does not respond, click Reset to wipe the corrupted WebView2 cache and relaunch the app from your taskbar.
Step 2: Refresh Your Microsoft 365 Copilot License and Privacy Settings
If you are troubleshooting why is copilot not working inside Word, Excel, PowerPoint, or Outlook (where the button is greyed out or missing):
- Open Microsoft Word (or Excel) and click File > Account in the bottom-left corner.
- Under Account Privacy on the left side, click the Manage Settings button.
- Ensure both Experiences that analyze your content and All connected experiences checkboxes are ticked, then click OK.
- Back on the File > Account screen, look under Product Information and click the Update License button (outlined in Microsoft’s official Copilot troubleshooting documentation).
- Sign in with the exact Microsoft 365 account that holds your Copilot license, then close and restart all Office applications completely.
Step 3: Clear Cookies, Disable Ad Blockers, and Fix WebSocket Blocks in Edge/Chrome
If Copilot fails in your browser at copilot.microsoft.com or inside the Microsoft Edge sidebar:
- Click the Lock / Tune icon on the left side of your browser address bar while on
copilot.microsoft.com. - Select Cookies and site data and remove all stored cookies for
microsoft.comandbing.comto clear corrupted session tokens. - Temporarily pause ad-blocking extensions (such as uBlock Origin, Privacy Badger, or Ghostery) for
copilot.microsoft.com, as strict filter lists often block the background script that renders AI responses. - In Microsoft Edge, navigate to
edge://settings/sidebar, click Copilot under App and notification settings, and ensure Show Copilot button on the toolbar is toggled on.
Step 4: Repair the Microsoft Edge WebView2 Runtime Engine
Because both the Windows 11 Copilot app and the Office 365 Copilot side panes run inside WebView2, a damaged runtime breaks Copilot across your entire PC:
- Open Settings > Apps > Installed apps on Windows 11.
- Search for
Microsoft Edge WebView2 Runtime. - Click the three-dot menu icon next to it and select Modify.
- Accept the User Account Control (UAC) prompt and click Repair in the installer dialog. Windows will download a clean copy of the runtime engine without deleting your files.
Step 5: Check Group Policy and Registry Blocks on Windows 11 Pro/Enterprise
If Copilot disappeared completely from your Windows 11 system or displays an organizational restriction notice:
- Press Windows Key + R, type
gpedit.msc, and press Enter (on Windows 11 Pro/Enterprise). - Navigate to User Configuration > Administrative Templates > Windows Components > Windows Copilot.
- Double-click Turn off Windows Copilot. If it is set to Enabled, switch it to Not Configured or Disabled, click Apply, and restart your PC.
- Alternatively, press Windows Key + R, type
regedit, navigate toHKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\WindowsCopilot, and delete or set theTurnOffWindowsCopilotDWORD value to0.
Step 6: Bypass VPN and DNS Filtering Issues
Just as carrier routing glitches can trigger a T-Mobile SOS mode outage on mobile devices, encrypted corporate VPNs and custom DNS filters (such as Pi-hole or NextDNS) frequently block Microsoft’s AI endpoints. Disconnect your VPN for 60 seconds, open Command Prompt, run ipconfig /flushdns, and test a prompt in Copilot. If it responds immediately, whitelist *.copilot.microsoft.com and *.bing.com inside your VPN split-tunnel settings.
Frequently Asked Questions (FAQ)
Why is Copilot not working right now?
When Microsoft Copilot stops working suddenly for all users, it is typically caused by a backend Microsoft 365 or Azure OpenAI server outage. If no outage is active, the issue is usually an expired login token, a corrupted Microsoft Edge WebView2 cache, or a VPN blocking WebSocket traffic.
Why is Copilot greyed out in Microsoft Word and Excel?
The Copilot button appears greyed out in Word, Excel, and PowerPoint when Optional Connected Experiences are turned off in your privacy settings, when your document is saved locally rather than on OneDrive with AutoSave enabled (required in Excel), or when your Office license token needs to be refreshed via File > Account > Update License.
How do I fix Copilot when it says “Sorry, something went wrong”?
To fix the “Sorry, something went wrong” error in Copilot, sign out of your Microsoft account, clear your browser cookies for copilot.microsoft.com, disable any active VPN or ad-blocker extensions, and sign back in. On the Windows 11 desktop app, go to Settings > Apps > Installed apps > Copilot > Advanced options and click Reset.
Why did Copilot disappear from my Windows 11 taskbar?
Recent Windows 11 updates moved Copilot from a built-in system sidebar to a standalone taskbar app. If it disappeared, right-click your taskbar, select Taskbar settings, or search for Microsoft Copilot in the Microsoft Store to reinstall and pin the app—unless a corporate IT Group Policy has disabled it on your work device.
