Microsoft 365 sidebar on EDGE available but not responsive

Question

Microsoft 365 sidebar on EDGE available but not responsive

Raymond Wieszczyk 40

The Microsoft 365 sidebar on EDGE is visible and the little hand is present, but any left click on an icon or file results in a nonresponse. No error messages.

William Gerber 0 Reputation points

2026-03-20T18:32:17.91+00:00
Hello- I am currently experiencing the same behavior as well in my environment. Please see below for the following troubleshooting steps performed:

Cleared browser cache and cookies

Reset Microsoft Edge browser settings

Logged out and back into Edge profile

Deleted the Edge User Data folder to force a clean profile rebuild

Signed out of the Outlook sidebar panel

Attempted to sign out of the M365 sidebar app directly (no sign-out option present)

Tested on a clean test machine with a fresh Edge profile (identical behavior observed)

Confirmed Group Policy is identical across affected and unaffected users

Repaired Microsoft Edge via Windows Apps and Features

Manually cleared the Edge sidebar app path

Nothing changed the behavior. I did find this however when checking edge://sidebar-internals:

Version 4.11.81StoragekJsonParsingFailedFetcherkNoErrorTower UnsupportedkNoneManaged Devicetrue
Roland Pettersson 0 Reputation points

2026-03-25T15:11:42.97+00:00

M365 CoPilot sidebar worked fine with Edge version 146.0.3856.72.

After the update to version 146.0.3856.78 all icons become non responsive.
Judah Dixon (Dixon Judah) 0 Reputation points

2026-03-25T15:32:06.39+00:00
I have also performed these steps with no resolution. This is an issue with Edge's new version.

Cleared browser cache and cookies

Reset Microsoft Edge browser settings

Logged out and back into Edge profile

Deleted the Edge User Data folder to force a clean profile rebuild

Signed out of the Outlook sidebar panel

Attempted to sign out of the M365 sidebar app directly (no sign-out option present)

Tested on a clean test machine with a fresh Edge profile (identical behavior observed)

Confirmed Group Policy is identical across affected and unaffected users

Repaired Microsoft Edge via Windows Apps and Features

Manually cleared the Edge sidebar app path
Jordan Alber 0 Reputation points

2026-03-25T19:53:14.0866667+00:00

I have confirmed that this wasn't an issue a few days ago for me and a co-worker. We are both currently on Edge version 146.0.3856.78 and experience the same issue. Have attempted that same steps mentioned above with no resolution.

EDIT: I had another coworker on version 146.0.3856.72 with the same issue.
Raymond Wieszczyk 40 Reputation points

2026-03-26T00:51:51.66+00:00

I have tried everything except the detailed deletion of Edge and new install. Nothing has worked. Is there anyway to get Microsoft to answer a phone and help us. I do pay an annual fee for their product.

1 answer

Your answer

William Gerber 0 Reputation points

2026-03-20T18:32:17.91+00:00

Hello- I am currently experiencing the same behavior as well in my environment. Please see below for the following troubleshooting steps performed:

Cleared browser cache and cookies

Reset Microsoft Edge browser settings

Logged out and back into Edge profile

Deleted the Edge User Data folder to force a clean profile rebuild

Signed out of the Outlook sidebar panel

Attempted to sign out of the M365 sidebar app directly (no sign-out option present)

Tested on a clean test machine with a fresh Edge profile (identical behavior observed)

Confirmed Group Policy is identical across affected and unaffected users

Repaired Microsoft Edge via Windows Apps and Features

Manually cleared the Edge sidebar app path

Nothing changed the behavior. I did find this however when checking edge://sidebar-internals:

Version 4.11.81StoragekJsonParsingFailedFetcherkNoErrorTower UnsupportedkNoneManaged Devicetrue
Roland Pettersson 0 Reputation points

2026-03-25T15:11:42.97+00:00

M365 CoPilot sidebar worked fine with Edge version 146.0.3856.72.

After the update to version 146.0.3856.78 all icons become non responsive.
Judah Dixon (Dixon Judah) 0 Reputation points

2026-03-25T15:32:06.39+00:00

I have also performed these steps with no resolution. This is an issue with Edge's new version.

Cleared browser cache and cookies

Reset Microsoft Edge browser settings

Logged out and back into Edge profile

Deleted the Edge User Data folder to force a clean profile rebuild

Signed out of the Outlook sidebar panel

Attempted to sign out of the M365 sidebar app directly (no sign-out option present)

Tested on a clean test machine with a fresh Edge profile (identical behavior observed)

Confirmed Group Policy is identical across affected and unaffected users

Repaired Microsoft Edge via Windows Apps and Features

Manually cleared the Edge sidebar app path
Jordan Alber 0 Reputation points

2026-03-25T19:53:14.0866667+00:00

I have confirmed that this wasn't an issue a few days ago for me and a co-worker. We are both currently on Edge version 146.0.3856.78 and experience the same issue. Have attempted that same steps mentioned above with no resolution.

EDIT: I had another coworker on version 146.0.3856.72 with the same issue.
Raymond Wieszczyk 40 Reputation points

2026-03-26T00:51:51.66+00:00

I have tried everything except the detailed deletion of Edge and new install. Nothing has worked. Is there anyway to get Microsoft to answer a phone and help us. I do pay an annual fee for their product.

Answer 1

Use the following steps to troubleshoot an unresponsive Microsoft 365 sidebar in Edge:

Confirm the Edge sidebar is fully enabled
- In managed (work/school) environments, the sidebar can be blocked by policy.
- An admin should check the HubsSidebarEnabled policy in Group Policy:
  - Open Group Policy Editor → Administrative Templates → Microsoft Edge → Show Hubs Sidebar.
  - Set it to Enabled to allow the sidebar, then restart Edge.
Check for extension or policy conflicts with sidebar apps
- Sidebar apps (including Microsoft 365) are implemented as extensions and can be blocked or forced via policy.
- An admin should review these policies under Administrative Templates → Microsoft Edge → Extensions:
  - Control which extensions cannot be installed (ExtensionInstallBlockList): ensure the Microsoft 365 sidebar app/extension ID is not blocked.
  - Control which extensions are installed silently (ExtensionInstallForceList): if used, verify the configuration is correct so the app is installed and enabled.
- After any change, restart Edge.
Test in a new Edge profile
- A corrupted profile or conflicting extension can break sidebar behavior.
- In Edge, select the profile icon → Add profile → Add.
- In the new profile, check whether the Microsoft 365 sidebar icons respond to clicks.
- If they work in the new profile, reset or recreate the original profile.
Update Microsoft Edge
- Outdated builds can cause sidebar and Copilot/365 app issues.
- Go to edge://settings/help, let Edge check for and install updates, then restart the browser.
Reset Edge settings (last resort, non-destructive to data)
- Go to edge://settings/reset.
- Select Restore settings to their default values.
- Be aware this:
  - Resets startup page, new tab page, search engine, and pinned tabs.
  - Disables all extensions and clears temporary data (cookies).
  - Keeps favorites, history, and saved passwords.
- After reset, test the sidebar again before re-enabling extensions.

If the issue persists in all profiles and after reset/update, collect diagnostics before contacting support:

Edge version from edge://settings/help.
Active policies export from edge://policy.
Screenshot of sidebar settings from edge://settings/appearance/copilotAndSidebar.
OS version and account type (personal vs work/school), as tenant settings can affect sidebar apps.

References:

Judah Dixon (Dixon Judah) 0 Reputation points

2026-03-25T15:30:37.84+00:00

I have also performed these steps with no resolution. This is an issue with Edge's new version.

Cleared browser cache and cookies

Reset Microsoft Edge browser settings

Logged out and back into Edge profile

Deleted the Edge User Data folder to force a clean profile rebuild

Signed out of the Outlook sidebar panel

Attempted to sign out of the M365 sidebar app directly (no sign-out option present)

Tested on a clean test machine with a fresh Edge profile (identical behavior observed)

Confirmed Group Policy is identical across affected and unaffected users

Repaired Microsoft Edge via Windows Apps and Features

Manually cleared the Edge sidebar app path

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Microsoft 365 sidebar on EDGE available but not responsive

1 answer

Your answer