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To change extension developer mode in Edge on Windows 11, open the Extensions management page, locate the Developer mode control, and switch it on or off. Enter edge://extensions in the address bar, or open the Extensions menu and choose Manage extensions. The developer-mode switch controls whether Edge allows developer-loaded, unverified extensions; it is not the same as the on/off switch for an individual extension.
Microsoft says developer mode is intended for developers testing extensions before submission. Because it can permit sideloading extensions that Microsoft has not verified or certified, Microsoft recommends leaving it off when you do not need it. See Microsoft’s developer mode extension notification guidance.
What Edge extension developer mode does
Developer mode is a browser-level setting in Microsoft Edge. When enabled, Edge can work with extension packages or installations that are not delivered through the normal verified-extension process. This is useful when you are building or testing an extension, but it also weakens a safety boundary: an unverified extension may contain unsafe code or request access to data you did not expect.
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Developer mode is also separate from Windows 11’s optional developer settings. Turning it on does not put Windows into a system-wide developer configuration, change Windows Update behavior, or improve Edge performance. It changes how Edge handles extensions in that browser profile.
Developer mode versus an extension’s own switch
There are two different controls that are easy to confuse:
| Control | What it changes | Where to find it |
|---|---|---|
| Developer mode | Allows Edge to use developer-loaded or otherwise unverified extension packages. It applies to the browser’s extension system. | At the top area of the Extensions management page, opened with edge://extensions. |
| Individual extension toggle | Turns one installed extension on or off. It does not turn developer mode on or off for Edge. | The extension’s card on Manage extensions, or the extension’s entry in the Extensions menu. |
If you only want to stop one add-on from running, use that extension’s own switch. Microsoft documents this distinction in Add, turn off, or remove extensions in Microsoft Edge.
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Before you change the setting
- Use a current Windows 11 Edge installation and save work in any web apps that depend on an extension. Changing extension settings can interrupt an extension’s current task.
- If you are testing code, keep the extension package and its source in a location you trust. Developer mode does not inspect an unverified package for you.
- Know which Edge profile you are changing. Extensions and their settings are managed within the profile where you open the Extensions page, so check the profile picture before testing.
- Write down which extensions you intentionally loaded. This makes an unexpected developer-mode notification easier to investigate later.
- If Edge says that settings are managed by your organization, you may not have permission to change developer mode. Skip the registry-edit suggestions found on random websites; Microsoft warns that registry changes can be risky. Ask your administrator instead.
How to enable extension developer mode in Edge
- Open the Extensions management page. In Edge, select the address bar, type
edge://extensions, and press Enter. You can reach the same page by selecting the Extensions (puzzle-piece) button on the toolbar and choosing Manage extensions. The small toolbar flyout is not the full management page, so use the page when you need the browser-level setting. - Find the browser-level control. Look across the top portion of the Extensions page for the switch labeled Developer mode. Do not use the switch on an individual extension card; that only enables that particular extension.
- Turn Developer mode on. Select the switch. Its appearance should change to indicate that the setting is enabled, and Edge should reveal the controls used for developer-loaded extensions. Exact placement can move slightly between Edge releases, but the control remains on the Extensions management page. If you do not see it, maximize the window and check that you are not viewing a restricted, organization-managed page.
- Load or test only the extension you trust. Follow the instructions supplied with your extension project. A developer package can have broad permissions, so inspect its files and source before loading it. Do not enable the setting simply because a website asks for it unless you can identify the extension and its publisher.
- Review permissions after installation. On the extension’s card, open its details and check the requested access. Microsoft’s extension guidance explains that site access can be limited to the current site or expanded to all sites. Details also include options affecting InPrivate windows and access to local file URLs; see Change site access permissions for extensions in Microsoft Edge.
- Test in a controlled context. Use a separate Edge profile for development when possible, and avoid signing into sensitive services while an unfamiliar package is active. Keep notes about the package version and the permissions you approved so you can reverse the changes accurately.
Enable developer mode only for the period in which you need to test. It is not required merely to install a normal extension from an approved store.
How to disable extension developer mode
- Return to Extensions. Open
edge://extensions, or select Extensions > Manage extensions. - Switch off Developer mode. Use the browser-level Developer mode switch at the top of the page. Confirm that it now shows the off state. If the control does not respond, the page may be controlled by an organization policy.
- Deal with any developer-loaded extension separately. Turning off the browser setting is different from disabling or removing an extension. If you no longer need a sideloaded extension, use its card’s Remove option, or turn off only its individual switch if you need to keep it installed for later testing.
- Close or reload affected tabs. A tab that was using a developer extension may need to be refreshed before the extension’s functions disappear. If a site behaves unexpectedly, close the tab, reopen it, and check the extension’s individual switch.
- Confirm the notification status. If Edge still reports developer-mode extensions, inspect the entire list. The notice can be triggered by one or more such extensions, not necessarily the one you were testing.
Microsoft recommends keeping developer mode off when it is not needed because unverified or uncertified extensions can create security and privacy risks. Disabling the mode does not prove that every installed extension is safe; review or remove extensions you do not recognize.
Stopping one extension without changing developer mode
If your goal is simply to stop an extension from running, leave Developer mode unchanged and manage that extension directly:
- Select the Extensions button on Edge’s toolbar.
- Open Manage extensions.
- Find the extension card and use its on/off switch.
- For a permanent cleanup, choose Remove and confirm. If you are unsure what the extension does, open its details first and examine its permissions and site access.
This approach is preferable when one extension is causing pop-ups, page changes, performance problems, or a privacy concern. Turning off developer mode affects the browser’s ability to use developer-loaded extensions; it is not a targeted substitute for managing a single add-on.
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Why Edge shows a “developer mode extensions” notification
Microsoft says the notification appears because one or more developer-mode extensions are present. It is a safety reminder, not an indication that Windows 11 itself is in a developer setting. The notification cannot be dismissed permanently through a close button, according to Microsoft’s support guidance.
To address the underlying cause, open edge://extensions and inspect every listed extension. For an extension you do not need, remove it. For one you recognize but do not want running, turn off its individual switch. If you are actively testing an extension, keep the package and its permissions under review and turn developer mode off as soon as the test is complete.
Turning off the individual extension may stop its activity, but removing all developer-loaded entries is the clearest way to eliminate an entry you cannot identify. If the message returns after a restart, look for another developer-mode extension in the list or a policy that is reinstalling it.
Using another Edge channel for testing
Microsoft recommends Edge Dev or Canary for developers who do not want to see the notification while testing extensions. The available guidance does not establish comparative stability, release cadence, or feature differences between those channels and Stable, so choose a channel according to your organization’s testing policy rather than assuming one is safer or more stable.
| Situation | Practical choice |
|---|---|
| Everyday browsing and occasional extension use | Use the Stable channel and keep Developer mode off unless you are actively testing a package. |
| Ongoing extension development | Use a separate testing profile or an Edge Dev/Canary installation, as Microsoft suggests, and limit testing extensions’ permissions. |
| Notification appears unexpectedly | Inspect the Extensions page for developer-loaded entries, then disable or remove anything you do not recognize. |
Security and permission checks for developer extensions
Developer mode changes how an extension can be installed; it does not make the extension trustworthy. Before enabling a package, check who supplied it, whether its source code is available to you, and what data it can access. A familiar file name or a recommendation in a forum is not proof of safety.
Check site access
In the extension’s details, use the site-access setting to grant access only where it is required. Microsoft documents options that restrict an extension to the current site or allow access on all sites. Broad access can expose page contents, form data, and browsing activity to the extension, depending on the permissions it requests. Revisit this choice after testing; a temporary test need is not a reason to leave access broad permanently.
Check private-window and file access
Extension details can include separate controls for use in InPrivate windows and for reading local file URLs. Leave these disabled unless the extension’s purpose requires them. A developer extension with access to local files or private browsing data deserves the same scrutiny as one with access to ordinary websites. If you later enable either option, record why and turn it back off when the test ends.
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Review store-installed extensions too
Store distribution is not a reason to skip permission review. Microsoft advises checking an extension’s requested permissions. If you install an extension from the Chrome Web Store, Edge may prompt you to allow extensions from other stores; accept that only when you trust the extension and its publisher, then review its permissions in Edge. Microsoft’s extension FAQ covers this process: Microsoft Edge Extensions: Frequently Asked Questions.
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Troubleshooting common problems
The Developer mode switch is missing
- Confirm that you opened the full Extensions management page, not only the small toolbar pop-up. Go directly to
edge://extensions. - Maximize the Edge window or zoom the page back to 100 percent if the top controls are hidden or wrapped.
- Restart Edge and open the page again. A browser update or a policy refresh can change which controls are available.
- Check the active Edge profile; you may be looking at a different profile from the one where the extension was installed.
- If the page says that an administrator controls extensions, contact the organization that manages the device. Do not remove policy registry values as a routine fix.
Edge says an extension is managed by an organization
On a work or school computer, an administrator can enforce extension policies or prevent developer mode. Microsoft’s FAQ discusses organization-managed extensions. Record the extension name and the exact message, then ask the administrator to confirm whether the restriction is intentional. On a personally owned computer that unexpectedly shows this message, review installed management software and browser policies with qualified technical help before changing the registry; an incorrect edit can affect Edge or Windows.
The notification remains after I changed settings
Check the Extensions page for more than one developer-mode extension. The notification is associated with the presence of one or more such extensions, so disabling only the extension you first noticed may not resolve it. Remove unneeded entries, turn off the individual extensions you must keep, and restart Edge. If you are testing, Microsoft’s Dev or Canary recommendation is the supported way to avoid the notification during development.
An extension stops working after Developer mode is turned off
That extension may depend on developer loading. Reopen its details and verify whether it is still installed and enabled. If it is your own project, turn Developer mode on only in a dedicated testing profile, reproduce the issue, and turn it off again afterward. If it came from a store, reinstall it through the store rather than leaving developer mode enabled permanently.
An extension causes suspicious behavior
- Open Extensions > Manage extensions and turn the extension off.
- Remove it if you do not need it or cannot verify its source.
- Review its site, InPrivate, and file-URL access before considering reinstallation.
- Run your normal Windows and browser security checks, and change passwords from a known-clean device if you believe sensitive information may have been exposed.
Quick decision guide
| Your goal | What to change |
|---|---|
| Load an extension package while developing it | Enable Developer mode on edge://extensions, test the package, then disable the mode when finished. |
| Stop one extension temporarily | Use that extension’s individual switch on Manage extensions. |
| Delete an unwanted extension | Use the extension card’s Remove option. |
| Stop the developer-mode notification | Review and remove or disable developer-mode extensions; the notification itself cannot be permanently dismissed. |
| Change a setting blocked by your employer or school | Contact the administrator managing Edge rather than editing policy keys yourself. |
| Install from the Chrome Web Store | Allow extensions from other stores only after verifying the publisher, then review the extension’s permissions. |
Safe operating routine
- Use a separate Edge profile for extension development so test packages do not share browsing data with your everyday profile.
- Enable Developer mode only when a test requires it.
- Load packages from a source you can verify and record which package version you installed.
- Restrict site access, InPrivate access, and file-URL access to the minimum necessary.
- After testing, disable Developer mode and remove packages you no longer need.
- Periodically review Manage extensions for unfamiliar entries and permissions that have become broader than necessary.
- When the developer-mode notification appears, treat it as a prompt to audit the list rather than something to hide.
Frequently Asked Questions
Is Edge Developer mode the same as turning an extension on?
No. Developer mode is a browser-level control that permits developer-loaded or unverified packages. An extension’s own switch only enables or disables that one installed extension. Both controls are on the Extensions management page, which is why they are easy to confuse.
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Where is the Developer mode switch in Edge on Windows 11?
Open edge://extensions, or choose Extensions and then Manage extensions. Look in the top area of the full management page for Developer mode. The toolbar flyout alone does not provide the complete management view.
Can I dismiss the developer mode extension notification?
Microsoft says the notification cannot be permanently dismissed. Inspect the Extensions page for every developer-mode extension, remove entries you do not need, and turn off extensions you recognize but are not currently testing. Microsoft recommends Edge Dev or Canary for developers who do not want the notice during testing.
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Will turning off Developer mode remove my extension?
No. Turning off the browser setting is separate from disabling or removing an extension. A developer-loaded extension may stop working or require developer mode again, but you must use the extension card’s individual switch or Remove command to change its installation.
Why does Edge say one or more developer mode extensions are present?
The message means Edge detected at least one extension loaded in developer mode. Open edge://extensions and review the complete list; disabling only the first extension you notice may not clear the message if another developer-loaded entry remains.
How should I handle an extension from the Chrome Web Store?
Edge may ask you to allow extensions from other stores. Approve that only when you trust the extension and its publisher. After installation, open its details and review requested permissions, site access, InPrivate access, and local file URL access.
What if my employer or school controls the setting?
An organization can enforce extension policies or prevent Developer mode. Contact the administrator and provide the extension name and exact message. Do not routinely delete registry policy values; Microsoft warns that registry changes can be risky and an incorrect edit can affect Edge or Windows.
Should I leave Developer mode enabled for convenience?
No. Microsoft recommends turning it off when it is not needed because unverified or uncertified extensions can create security and privacy risks. Enable it only for a specific test, restrict permissions, and disable it when the test is complete.
The Bottom Line
Use edge://extensions to change Edge’s browser-level Developer mode. Enable it only to test a trusted, unverified package, review site and privacy permissions, and turn it off afterward. To stop or remove one add-on, use that extension’s own switch or Remove option instead.
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