You open Edge expecting the Copilot button in the sidebar, and it is gone — no icon, no panel, no way to summon it. Browsing without sidebar Copilot feels slower, because you lose the quickest way to summarise a page or ask about what you are reading. The good news is that the sidebar is a setting, not a feature that breaks, so it is almost always recoverable in a minute or two.

Missing sidebar buttons come from a few places: the sidebar itself hidden, the Copilot button removed from the toolbar, an Edge update resetting customisations, or a policy disabling it on managed PCs. Each has a different toggle, and checking them in order finds yours quickly without resorting to reinstalls.

Related Edge and AI feature problems often share causes. If your machine struggles with fast startup, see our guide to fast startup issues on AI PCs , and if Paint’s AI features are also missing, check image creator in Paint running slow . For display problems that affect the sidebar, our guide to HDR not working on ARM laptops covers the graphics layer that can hide panels.

Why this happens

  • Sidebar hidden: The Edge sidebar can be collapsed or disabled, hiding Copilot with it.
  • Copilot button removed: Toolbar customisation may have removed the Copilot icon specifically.
  • Update reset: An Edge update can restore default toolbar and sidebar settings, dropping Copilot.
  • Policy block: Work or school policies can disable Copilot in Edge entirely.
  • Profile problem: A corrupted Edge profile can lose sidebar settings while everything else works.
  • Wrong Edge channel: Some Copilot sidebar features roll out to stable Edge later than to Beta or Dev channels.
  • Sidebar set to auto-hide: A sidebar that hides itself can look missing when it is merely collapsed.

How to fix it

Work through these in order — diagnose first, then act.

Fix 1: Show the sidebar again

The sidebar may simply be hidden. Edge has a sidebar toggle in settings and a toolbar button, and either one restores it instantly.

  1. Open Edge and press Ctrl + Shift + / to toggle the sidebar, if supported.
  2. Alternatively, open Edge settings and go to Appearance.
  3. Find the sidebar or toolbar options.
  4. Turn the sidebar on.
  5. Look for the Copilot icon in the restored sidebar.
  6. If the sidebar appears but Copilot is absent, continue below.

Fix 2: Re-add the Copilot button to the toolbar

If the sidebar is visible but Copilot’s icon is missing from it, the button itself may have been removed. Toolbar customisation lets you add it back without touching anything else.

  1. Right-click the Edge toolbar and choose customise options if available.
  2. Open Edge settings, go to Appearance, then Toolbar.
  3. Look for the Copilot toggle or button option.
  4. Turn it on.
  5. Restart Edge if the button does not appear immediately.
  6. Click the Copilot icon to confirm the sidebar panel opens.

Fix 3: Check for an Edge update reset

If Copilot vanished right after an Edge update, the update likely reset your toolbar. Re-adding the button after the update usually sticks until the next major update, so this is a quick recurring fix rather than a deep problem.

  1. Open Edge settings, go to About Microsoft Edge.
  2. Confirm Edge is fully updated.
  3. Re-enable the sidebar and Copilot button as in Fixes 1 and 2.
  4. Restart Edge.
  5. Confirm Copilot stays visible across a few restarts.
  6. If it resets again after every update, note the pattern for the next fix.

Fix 4: Check for policy restrictions

On work or school PCs, an administrator policy can remove Copilot from Edge. Greyed-out settings are the tell-tale sign, and only your IT administrator can change them.

  1. Check whether your PC is managed by an organisation.
  2. Open Edge settings and look for greyed-out Copilot or sidebar options.
  3. Check Edge’s policy page for Copilot-related policies.
  4. If managed, ask IT whether Copilot in Edge is permitted.
  5. On a personal PC, check for third-party tools that manage browser settings.
  6. Disable such tools temporarily and retest.

Fix 5: Try a new Edge profile

A corrupted profile can lose sidebar settings while the browser otherwise works fine. Testing in a fresh profile tells you whether the profile is the problem, and it costs nothing to try.

  1. Open Edge settings, go to Profiles.
  2. Add a new profile.
  3. Switch to the new profile.
  4. Check whether the Copilot sidebar appears there.
  5. If it does, the old profile is corrupt — migrate bookmarks and settings to the new one.
  6. If it does not, the problem is Edge-wide, not profile-specific.

Fix 6: Repair or reset Edge

When settings, profiles, and policies all check out but Copilot stays missing, the Edge installation itself may be damaged. Repairing it restores default components while keeping your data, and it is less drastic than reinstalling.

  1. Open Settings, go to Apps, then Installed apps.
  2. Find Microsoft Edge and open Advanced options.
  3. Choose Repair.
  4. Relaunch Edge and check the sidebar.
  5. If Repair fails, choose Reset, noting that it clears Edge settings.
  6. Re-enable the sidebar and Copilot after the reset.

Fix 7: Use the Copilot app or web version as a workaround

While you fix the sidebar, the standalone Copilot app and the web version keep you productive. This is not a surrender — it is a bridge that keeps AI help available during troubleshooting.

  1. Open the Copilot app from the Start menu.
  2. Alternatively, open Copilot on the web in Edge.
  3. Sign in with the same Microsoft account.
  4. Use it for page questions by copying relevant text if needed.
  5. Return to sidebar fixes once you have time.
  6. For ongoing Edge problems, see the official Windows support pages .

Closing

A missing Copilot sidebar in Edge is a settings problem in nearly every case: a hidden sidebar, a removed button, or an update reset. Toggle the sidebar back on, re-add the button, and check for policy blocks before considering repairs. Once it is back, sidebar Copilot returns to being the fastest way to understand whatever page you are reading.

Frequently asked questions

Why is Copilot missing from the Edge sidebar?
The usual causes are the sidebar being hidden, the Copilot button being removed from the toolbar, an Edge update resetting sidebar settings, or a work or school policy disabling Copilot in the browser.
Is Copilot in Edge the same as the Copilot app?
They share the same assistant and account, but the Edge sidebar version is optimised for browsing — summarising pages, answering questions about open tabs, and helping with web tasks — while the app is a standalone experience.
Can I restore the sidebar without reinstalling Edge?
Yes, almost always. The sidebar is a setting, not a separate install, so toggling it back on in Edge settings or the toolbar customisation menu restores it without reinstalling anything.
Why does the sidebar keep disappearing after updates?
Edge updates occasionally reset toolbar and sidebar customisations. Re-enabling the sidebar after an update and checking for policy changes usually keeps it stable until the next major update.