Recently I was required to configure IE Mode for a project. In my org, Internet Explorer 11 has been removed from our Windows Endpoints for about a year to 18 months now, so the only option to run “legacy” web app on Microsoft Edge is IE mode.
Turns out it wasn’t needed in the end, but I picked up a new way to do this compared to how I’ve done it previously.
In the past I’ve used the Enterprise site mode list manager app to generate an XML, then uploaded it to a publicly available storage (e.g. Azure Blob Storage), and configure some Intune configuration policies and presto – IE Mode.
I’ll be honest, I’ve aways found this method to be a wee bit clunky, so when looking into IE Mode recently, I was able to find that Microsoft have provided a far superior way to achieve this now called Cloud Site List Management.
To use this feature – you must be assigned the Microsoft Edge Administrator role.

There is also a requirement to be on Microsoft Edge v93 or higher, but at the date of writing this blog, along with that version being released just over a year ago, I would expect folks to be on the current version of Microsoft Edge.
The next step is (assuming you have gathered all of your sites for IE Mode) to open a browser and go to the Microsoft 365 Admin center.
Navigate to Settings – Org settings and select Microsoft Edge site lists.

You can configure multiple Microsoft Edge site lists based on your requirements, but in this example, I will create one and use this blog site
Click on Create a new list

Give the list a name and appropriate description, click Create

Click Close panel

Click on the site list to open it

Click on Add a site

Make the appropriate configurations and click Save

Click the close X once the site has been added

It’s recommended to validate the sites, click Validate site list

If no invalid sites are found, click the close X otherwise remediate the invalid sites before proceeding

Click the check box next to the site list just created and click Publish site

Confirm or set the version number and click Publish

The site list has now been published, click Close panel

One last thing is to capture the Site List ID before moving on to the Intune configuration profiles.
Intune Configuration
NOTE – For this example, I will only be creating an Intune configuration profile, but the same configurations are available if you use Group Policy.
In Intune, navigate to Devices – Windows – Configuration Profiles and click Create profile

I created the following Administrative Template Profile
Profile Name | Win 10/11 – Admin Templates – Microsoft Edge – IEMode – thenewnumber2.com |
Profile Description | Configures IE Mode for site thenewnumber2.com |
Search for the following configuration Configure the Enterprise Mode Cloud Site List
Set the profile to Enabled. This is where you will need the Site List ID from the previous steps. Enter it in the Configure the Enterprise Mode Cloud Site List field and click OK

Search for Configure Internet Explorer integration
Set the profile to Enabled. As Internet Explorer 11 is now end of life and should not be used, select Internet Explorer Mode. Click OK

Click Next

Click Next

Assign to an appropriate Group and click Next

Review the configurations and click Create

The final step is to check to see if the page successfully opened in IE mode

P.