>*Default setting: Enabled (Allowed)* [!INCLUDE [allow-sideloading-of-extensions-shortdesc](../shortdesc/allow-sideloading-of-extensions-shortdesc.md)] ### Allowed values |Group Policy |MDM |Registry |Description |Most restricted | |---|:---:|:---:|---|:---:| |Disabled or not configured |0 |0 |Prevented/not allowed. Disabling does not prevent sideloading of extensions using Add-AppxPackage via PowerShell. To prevent this, enable **Allows development of Windows Store apps and installing them from an integrated development environment (IDE)** policy, located at Windows Components > App Package Deployment.

For the MDM setting, enable **ApplicationManagement/AllowDeveloperUnlock**. |![Most restricted value](../images/check-gn.png) | |Enabled
**(default)** |1 |1 |Allowed. | | --- ### ADMX info and settings #### ADMX info - **GP English name:** Allow sideloading of Extensions - **GP name:** AllowSideloadingOfExtensions - **GP path:** Windows Components/Microsoft Edge - **GP ADMX file name:** MicrosoftEdge.admx #### MDM settings - **MDM name:** Browser/[AllowSideloadingExtensions](../new-policies.md#allow-sideloading-of-extensions) - **Supported devices:** Desktop - **URI full path:** ./Vendor/MSFT/Policy/Config/Browser/AllowSideloadingExtensions - **Data type:** Integer #### Registry settings - **Path:** HLKM\Software\Policies\Microsoft\MicrosoftEdge\Extensions - **Value name:** AllowSideloadingOfExtensions - **Value type:** REG_DWORD ### Related policies - Allows development of Windows Store apps and installing them from an integrated development environment (IDE): When you enable this policy and the **Allow all trusted apps to install** policy, you allow users to develop Windows Store apps and install them directly from an IDE. - Allow all trusted apps to install: When you enable this policy, you can manage the installation of trusted line-of-business (LOB) or developer-signed Windows Store apps. ### Related topics [Enable your device for development](https://docs.microsoft.com/en-us/windows/uwp/get-started/enable-your-device-for-development): Configure your Windows 10 device for development and debugging.