Extension Developer Mode in Microsoft Edge on Windows 11 lets you load custom browser add-ons directly from your computer files before you publish them to a store. Microsoft Edge version 117.0.2045.120 and later includes this switch so you can test custom add-ons or run test builds from other creators.
You can turn this setting on or off with a few clicks from the main extensions page inside the browser. This control helps you build and test your own browser tools right on your PC.
Open Microsoft Edge, click the Extensions button or the three-dot menu, and select Manage extensions. Toggle the Developer mode switch to On or Off on the left side of the screen.
Why use Developer Mode?
Creators use this mode to test custom tools directly in the browser, bypassing the official Microsoft store submission process.
What happens when you turn it on?
Turning on Edge developer mode lets you install browser extensions straight from local files on your computer instead of the official Microsoft store. This setting is meant for people who build extensions to test their work, but it also lets regular users install custom add-ons. Keep in mind that running unverified code can introduce security risks, so you should only turn it on if you trust the files you plan to add.
References:
- Sideload an extension to install and test it locally – Microsoft Edge Developer documentation
- Developer mode extension notification – Microsoft Support
- Microsoft Edge extensions documentation – Microsoft Edge Developer documentation
Option 1Use the Edge Settings Menu
Turning on Edge developer mode through the browser settings menu lets you manage extensions for your personal user account without touching advanced system tools. You can find this toggle by opening the extensions page inside Microsoft Edge. This method is the fastest way to switch the feature on or off if you are the only person using your computer or do not need to block other accounts.
- Open the Microsoft Edge browser.
- Click the Extensions button on the toolbar or click the Settings and more (three-dot) menu and select Extensions.
- Click on Manage extensions.
- On the left side of the screen, toggle the Developer mode switch to On or Off.
Option 2Use the Registry for All Users
Locking down Edge developer mode through the Windows Registry blocks standard users from turning the feature on across the entire computer. Administrators often use this method to stop other accounts from installing unverified browser extensions. You need administrator privileges and the Windows Terminal app to run the command that enforces this system-wide restriction.
Open the Windows Terminal app with administrator privileges and run the following command:
To Disable Developer Mode for All Users:
Locking down this setting blocks standard users from altering browser configuration parameters. The "Developer mode" toggle grays out in the interface, signaling that manual adjustments are prohibited.
reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge" /v ExtensionDeveloperModeSettings /t REG_DWORD /d 1 /f
To Enable Developer Mode for All Users:
Default configurations leave extension management up to individual computer operators. Every person sharing a Windows 11 machine retains the freedom to toggle extension developer mode according to personal requirements.
reg delete "HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge" /v ExtensionDeveloperModeSettings /f
Summary
Leaving Edge developer mode disabled remains the safest practice for shielding browsers against unverified software. Operators can activate the feature manually through settings, while administrators possess the tools to enforce system-wide changes.
How do I put an extension on developer mode?
To put an extension into developer mode in Edge, open the 'Manage extensions' page and flip the 'Developer mode' switch to 'On' to load unpacked extensions from your computer.
How do I enable developer mode in edge extensions?
Navigation to 'edge://extensions' provides direct access to the toggle switch for 'Developer mode' at the bottom left of the screen.
How to use extensions in private mode in Edge?
To use extensions in Edge's private mode, go to 'Manage extensions,' click 'Details' for the extension, and turn on the 'Allow in InPrivate' switch.
How to get rid of extensions on Microsoft Edge?
To remove unwanted extensions from Microsoft Edge, click the puzzle icon, choose 'Manage extensions,' find the target item, and click the 'Remove' button.
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About the Author
Richard
Tech Writer, IT Professional
Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.
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