In my post below I was showing how to set up co-management with System Center Configuration Manager (SCCM 1910), now I want to do the same with its successor Microsoft Endpoint Configuration Manager (2211 as of today).

Co-Management with System Center Configuration Manager (SCCM 1910) and Microsoft Intune


Starting in version 1910, Configuration Manager current branch is now part of Microsoft Endpoint Manager. Version 1906 and earlier are still branded System Center Configuration Manager. The Microsoft Endpoint Manager brand will appear in the product and documentation over the coming months.

With co-management you can still manage your clients with MECM but also with Microsoft Intune for Mobile Device Management (MDM).

With Intune you can do the following remote actions:

  • Factory reset
  • Selective wipe
  • Delete devices
  • Restart device
  • Fresh start

Futher you can orchestrate with Intune the following workloads:

  • Compliance policies
  • Resource access policies
  • Windows Update policies
  • Endpoint Protection
  • Device configuration
  • Office Click-to-Run apps
  • Mobile apps


Before we can setup co-management in MECM, we first must setup the prerequisites Azure Services and Cloud management gateway in MECM.

You can also manage clients with MECM over the internet without a vpn connection and without co-management and Intune.

MECM provides two ways which will be described below. Cloud management gateway is one of them and also required and a prerequisite for co-management so that clients on the internet can download the MECM Client and register to the on-premise MECM Server.


Manage clients on the internet with Configuration Manager
https://docs.microsoft.com/en-us/configmgr/core/clients/manage/manage-clients-internet

Typically in Configuration Manager, most of the managed computers and servers are physically on the same internal network as the site system servers that perform management functions. However, you can manage clients outside your internal network when they are connected to the internet. This ability doesn’t require the clients to connect via VPN to reach the site system servers.

Configuration Manager provides two ways to manage internet-connected clients:

  • Cloud management gateway
  • Internet-based client management



Table Of Contents
  1. What is co-management?
  2. Cloud management gateway
  3. Internet-based client management
  4. Set up MECM for Co-Management
  5. Co-management workloads
  6. Links



What is co-management?

Co-management is one of the primary ways to attach your existing Configuration Manager deployment to the Microsoft 365 cloud. It helps you unlock more cloud-powered capabilities like conditional access.

Co-management enables you to concurrently manage Windows 10 or later devices by using both Configuration Manager and Microsoft Intune.

It lets you cloud-attach your existing investment in Configuration Manager by adding new functionality. By using co-management, you have the flexibility to use the technology solution that works best for your organization.

When a Windows device has the Configuration Manager client and is enrolled to Intune, you get the benefits of both services. You control which workloads, if any, you switch the authority from Configuration Manager to Intune. Configuration Manager continues to manage all other workloads, including those workloads that you don’t switch to Intune, and all other features of Configuration Manager that co-management doesn’t support.

You’re also able to pilot a workload with a separate collection of devices. Piloting allows you to test the Intune functionality with a subset of devices before switching a larger group.

Source: https://learn.microsoft.com/en-us/mem/configmgr/comanage/overview



Cloud management gateway

The cloud management gateway provides management of internet-based clients. It uses a combination of a Microsoft Azure cloud service, and a new site system role that communicates with that service. Internet-based clients use the cloud service to communicate with the on-premises Configuration Manager.

Starting in version 2203 (Microsoft Endpoint Configuration Manager), the option to deploy a CMG as a cloud service (classic) is removed. All CMG deployments should use a virtual machine scale set. For more information, see Removed and deprecated features.

Source: https://learn.microsoft.com/en-us/mem/configmgr/core/clients/manage/cmg/plan-cloud-management-gateway



Advantages

  • No additional on-premises infrastructure investment required.
  • Does not expose on-premises infrastructure to the internet.
  • Cloud virtual machines that run the service are fully managed by Azure and require no maintenance.
  • Easily set up and configured in the Configuration Manager console.


Disadvantages

  • Cloud subscription cost.
  • Management data sent through cloud service.

For more information, see Plan for cloud management gateway.


Internet-based client management

This method relies on internet-facing site system servers to which clients communicate for management purposes. It requires clients and site system servers to be configured for internet-based management.


Advantages

  • No cloud service dependency.
  • No additional cost associated with a cloud subscription.
  • Full control of servers and roles providing the service.


Disadvantages

  • Require additional infrastructure investment.
  • Overhead and operational cost of additional infrastructure.
  • Infrastructure must be exposed to the internet.

For more information, see Plan for internet-based client management.

How To Configure Internet-Based Client Management (IBCM) in Microsoft SCCM
https://www.youtube.com/watch?v=GbIOxNhJ9lU





Set up MECM for Co-Management


Now let’s start with our setup!

Co-management will cover two scenarios:

  • external only Azure AD joined devices auto-enroll into Intune and with Intune deploy the Configuration Manager Client through Cloud Management Gateway to get it enrolled co-managed into Intune and Configuration Manager.
  • internal on-Prem only domain joined devices managed in Configuration Manager will auto-register to Hybrid Azure AD joined and auto-enroll into Intune to be co-managed with Configuration Manager and Intune.


First as mentioned we need to create the Azure Services and the Cloud Mangement Gateway.


Set up Client Settings

Be sure to enable the following features in the Cloud Services section inside the Client Settings.

Allow access to cloud distribution point, otherwise clients won’t be able to download content from the cloud distribution point and internet.

Set Enable clients to use a cloud management gateway to yes. Further check that Automatically register new Windows 10 domain joined devices with Azure Active Directory and Allow access to cloud distribution point is also set to yes.


Now first we need to configure the Azure Services.


Configure Azure Services


Configure Azure services for use with Configuration Manager

Use the Azure Services Wizard to simplify the process of configuring the Azure cloud services you use with Configuration Manager. This wizard provides a common configuration experience by using Azure Active Directory (Azure AD) web app registrations. These apps provide subscription and configuration details, and authenticate communications with Azure AD. The app replaces entering this same information each time you set up a new Configuration Manager component or service with Azure.

Source: https://docs.microsoft.com/en-us/configmgr/core/servers/deploy/configure/azure-services-wizard


Right click on Azure Services –> Configure Azure Services


Deploying the Azure service for Cloud Management enables Configuration Manager clients to authenticate with the site using Azure Active Directory. We will also enable discovery of Azure Active Directory resources for this tenant.

Select Cloud Management.


Here we need to create a web app and a client app. You must use here an Azure global admin account which also have rights on the subscription to create resources.


To create the web app we need to click on Browse and then on Create.

Web app: Whether the service uses an Azure AD app of type Web app / API, also referred to as a server app in Configuration Manager.

Native app: Whether the service uses an Azure AD app of type Native, also referred to as a client app in Configuration Manager.

Source: https://learn.microsoft.com/en-us/mem/configmgr/core/servers/deploy/configure/azure-services-wizard


Create the server app as shown below.



Create the client app as shown below.



We will also enable MECM to discover cloud identities.





Grant Permissions to the Server and Client App in Azure AD

In Azure Active Directory under App registrations you should now see our created applications.


To enable the applications to access the Azure AD, we must grant permissions as shown below.

Modify Default Azure Active Directory Graph Permissions from User.Read to Directory.Read.All for the Client App.



Modify Default Azure Active Directory Graph Permissions from User.Read to Directory.Read.All for the Server App if not still enabled. In my case the permissions was per default to Directory.Read.All



Create the Cloud Management Gateway (CMG)

Under Cloud Services right click on Cloud Management Gateway and click on Create Cloud Management Gateway.


Login again with your global Azure admin account which also should have rights on the subscription to create resources.


Here you configure the cloud management gateway settings. The first thing to do here, is to upload the webserver (IIS) certificate for our VM Instance in Azure which represents the cloud management gateway. Therefore you must upload an *.pfx file which contains not only the certificate with the public key but also the private key.

In my case I use a wildcard certificate, so I must also specify the sudomain (hostname) of the service name, in my case cmgBC.

Please be aware that the subdomain must be unique as you get a domain in the public cloudapp.net domain space. The setup assistant will unfortunately not verify this. Also the local logs on the MECM will not warn you about this. The only way to see if the deployment fails because of a subdomain which is in use by someone else is at the Activity log in Azure for the ressource group or cloud service. I will show you this logs later at troubleshooting.

Update: They changed the public domain name by changing the domain to azure and adding a subdomain which is the name from the region you deploy the cloud management gateway . As I am using the region West Europe, now the public domain name is westeurope.cloudapp.azure.com.

The deployment FQDN from my cloud management gateway therefore is cmgBC.westeurope.cloudapp.azure.com.

We also have to create a CNAME record in our organization’s public DNS. The CMG service in Azure and all clients that use it need to resolve the service name.

In my case I need to create a CNAME record cmgBC.braintesting.de that points to cmgBC.westeurope.cloudapp.azure.com

Source: https://learn.microsoft.com/en-us/mem/configmgr/core/clients/manage/cmg/server-auth-cert#create-a-dns-cname-alias


If we use a certificate from our internal PKI, we also must tell the Cloud Management Gateway (the VM Instance with IIS) that it should trust our PKI.

We can add the root certificate by clicking on the Certificates button below.

Note!!!
Below by default Verify Client Certificate Revocation is checked for the CMG, in that case you must ensure that the certificate revocation list (CRL) from your internal PKI can be downloaded from the CMG and internet, otherwise disable it.

This service certificate from CMG is used to authenticate the CMG service in Azure to Configuration Manager clients and encrypt all data transferred between them by using TLS.

Source: https://learn.microsoft.com/en-us/mem/configmgr/core/plan-design/network/pki-certificate-requirements#cloud-management-gateway-cmg

So as we use therefore a certificate from our internal PKI, we must ensure that all clients will trust this certificate. For internal domain joined computers the root certificate from the internal PKI will be installed by default. For external Azure AD joinded devices I will use Intune. We will see later how this works.


On the next page I will use the default settings.



You have to wait a few minutes till the VM Instance is created.



Here you can see that my provisioning failed.


More details about you will find in the CloudMgr.log file on the MECM server in the installation directory.

To view the logs you can use a normal text editor but better use the MECM Trace Log tool in the tools directory from MECM.



Mostly the reason why the provisioning failed you will see quickly by checking the Logs directly in Azure under the Activity log of the resource group you deployed the cloud management gateway.

The subscription is not registered to use namespace ‘Microsoft.KeyVault‘.

This error means that the service Microsoft.KeyVault is not registered in your Azure subscription.


To register the Microsoft.KeyVault service to my subscription, I will go to the subscription and the Resource providers menu.

Search for the service and click on Register.



Now I have to delete the failed cloud management gateway and have to re-create it.


The next try was successfully deploying my cloud management gateway.





Configure Cloud Management Gateway

Now we come to the configuration of the cloud management gateway connection point. This will act as proxy between the CMG in Azure (VM) and the management point and software update point in MECM. Therefore external clients can use this channel for things like scanning and getting policies.

So go to Site Configuration – Servers and Site System Roles and add the Site System Role Cloud management gateway connection point for your primary site server.


Select Cloud management gateway connection point.


Select the CMG we created previously.



Now we must enable that our on-premise Management point and Software update point can use the cloud management gateway for external clients to establish a connection to our on-premise MECM site.

So open the properties from the Management point. Check that Client connections use HTTPS and check Allow Configuration Manager cloud management gateway traffic.

Under https://www.youtube.com/watch?v=nChKKM9APAQ you will see step by step how to configure SCCM to use HTTPS/PKI.


We also must define for the Software update point to allow the cloud management gateway. So be sure to check the Allow Configuration Manager cloud management gateway traffic.


After finishing the setup of the cloud management gateway, you should see at the clients the new internet-based management point (FQDN) in the properties of the configuration manager and the Network tab.


Be aware that it can take up to 24 hours till you see this management point at the client. By default every 24 hours the client is going to do a content locator or a location request.

To speed things up and this will kick in immediately you can restart the SMS Agent Host service on the client.

About SMS Agent Host service 

Ccmexec.exe and Smsexec.exe are the processes for the agent for Microsoft Systems Management Server (SMS). The executable for the agent should not be on your computer unless you have SMS deployed. If you stop the service it will no longer report back to the SMS server. The newer versions of the Systems Management Server (SMS) are called System Center Configuration Manager (SCCM) and now Microsoft Endpoint Configuration Manager (MECM).




Now after finishing the setup of the Azure Services and Cloud management gateway, we finally can configure and setup co-management in MECM.

How to Set Up Co-Management in Microsoft SCCM
https://www.youtube.com/watch?v=rTapalSHv6U



Prerequisites for Co-Management

First check some prerequisites for co-management in Azure under Azure Active Directory – Devices – Device Settings.

Users must be able to join devices to Azure AD, so switch to All or Selected and add the users who should be able to join.


Also check under Azure Active Directory – Mobility (MDM and MAM) – Microsoft Intune, that users are able to auto-enroll into Intune.

https://docs.microsoft.com/en-us/mem/intune/enrollment/windows-enroll#enable-windows-10-automatic-enrollment


Users must be able to auto-enroll into Intune, so switch to All or Some at MDM user scope and add the users who should be able to auto-enroll into Intune.

For BYOD devices, the MAM user scope takes precedence if both MAM user scope and MDM user scope (automatic MDM enrollment) are enabled for all users (or the same groups of users). The device will use Windows Information Protection (WIP) Policies (if you configured them) rather than being MDM enrolled.

For corporate devices, the MDM user scope takes precedence if both scopes are enabled. The devices get MDM enrolled.


To get devices auto-enroll into Intune, the user also needs an enabled license. In my case you see the Enterprise Mobility + Security E3 license which also includes Intune and a separate Intune license.





Set up Co-Management

After checking all prerequisites we can start setup co-management in MECM. So go to Administration – Cloud Services – Cloud Attach.

Starting in version 2111, it’s simpler to cloud attach your Configuration Manager environment. You can choose a streamlined set of recommended defaults, or customize your cloud attach features. If you’re not running version 2111 yet, use the Tenant attach, Endpoint analytics, and Co-management articles to enable cloud attach features.

Source: https://learn.microsoft.com/en-us/mem/configmgr/cloud-attach/enable


In order to first test co-management on a few devices, I will select Customize settings here to limit the devices which will get managed also by Intune.



Here I will limit the devices which should be co-managed with Intune by specifying a dedicated device collection.

There’s also a new built-in device collection for Co-management Eligible Devices to help you identify clients.
Source: https://learn.microsoft.com/en-us/mem/configmgr/comanage/how-to-enable


Before enrolling Intune to all clients you can first use a Pilot Group with a few clients to do some testing.

You can see here the previously created Cloud management gateway in the command line. To enable co-management for devices already enrolled in Intune, we create further down an app in Intune to install the Configuration Manager client on them. The MDM Agent on the external devices then knows how to enroll back to our site through the cloud management gateway over the internet.

So copy the following command line.

For Intune auto-enrollment the clients must be windows 10 1709 or later.
Internal only on-prem domain joined devices first needs to auto-register to Hybrid Azure AD joined.





Deploy Configuration Manager by creating a new Intune App

Now we must create the Microsoft Intune App as mentioned above so that the clients on the internet can enroll and register through the cloud management gateway. Therefore the app will deploy the Configuration Manger client to the external internet clients.

In Microsoft Endpoint Manger create a Line-of-business app.

https://endpoint.microsoft.com/


Upload the Configuration Manager MSI File located on the MECM Server in the installation directory under \bin\i386\ccmsetup.msi


Also insert the CMG command line arguments as shown below. Therefore we need to enter the previously copied CCMHOSTNAME and SMSSiteCode.

Because I also want to enroll external Azure AD joined devices which are pure internet clients without a PKI client certificate from my internal PKI, I also need to include the following two installation properties to support Azure AD client authentication for the CMG:

AADCLIENTAPPID
Specifies the Azure Active Directory (Azure AD) client app identifier. You create or import the client app when you configure Azure services for Cloud Management. An Azure administrator can get the value for this property from the Azure portal. For more information, see get application ID.

AADRESOURCEURI
Specifies the Azure AD server app identifier. You create or import the server app when you configure Azure services for Cloud Management. When you create the server app, in the Create Server Application window, this property is the App ID URI.

An Azure administrator can get the value for this property from the Azure portal. In Azure Active Directory, find the server app under App registrations. Look for application type Web app / API. Open the app, select Settings, and then select Properties. Use the App ID URI value for this AADRESOURCEURI client installation property.

Source: https://github.com/MicrosoftDocs/memdocs/blob/main/memdocs/configmgr/core/clients/deploy/about-client-installation-properties.md#-ccmsetupmsi-properties


AADCLIENTAPPID


AADRESOURCEURI


So in my case the CMG command line arguments looks like this:

ccmsetup.exe CCMHOSTNAME=CMGBC.BRAINTESTING.DE/CCM_Proxy_MutualAuth/72057594037927939 SMSSiteCode=BC1 AADTENANTID=dcec9d65-0185-498d-812c-a9aa1553178f AADCLIENTAPPID=dd4ba9c6-88c5-4119-8c36-fdcf993afbfa AADRESOURCEURI=api://dcec9d65-0185-498d-812c-a9aa1553178f/a996a999-b3fc-4469-8fd7-aacad345d402


You also have to assign a group or users to which the app should be deployed.


Finally click on Create.






Deploy Root Certificate for Azure AD joined external Devices

As mentioned further above, we also need to deploy the root certificate from our internal PKI to external Azure AD joined devices, without they wouldn’t trust the server certificate from our cloud management gateway (VM/IIS webserver).

Therefore we configure in the Microsoft Endpoint Manager admin center a new configuration profile for our Windows devices.

https://endpoint.microsoft.com/

Home –> Devices –> Windows –> Configuration profiles –> Create profile


Select the Trusted certificate profile.


Enter a name for the app.


Select your Root CA.


I will assign it to all users and devices.





Configuration Manager Client

As mentioned already at the beginning, with co-management we have two scenarios:

  • 1. external only Azure AD joined devices auto-enrolled into Intune and with Intune deployed Configuration Manager client through Cloud Management Gateway to get it enrolled co-managed into Intune and Configuration Manager.
  • 2. internal on-prem only domain joined devices managed in Configuration Manager will auto-register to Hybrid Azure AD joined and auto-enrolled into Intune to be co-managed with Configuration Manager and Intune.


If you now join a new device from external to Azure AD (Scenario 1 – external client) with a user who is in the MDM user scope, the client is auto-enrolled into Intune and the Configuration Manager client will be downloaded and installed on the client by using the previously created Line-of-business app.


Below I joined an external Windows 10 computer with the hostname nb-John-external and the username jdoe@braintesting.de to the Azure AD from my lab environment.

John Doe had the Enterprise Mobility + Security E3 license assigned and is in the MDM scope.

A few minutes later nb-John-external is also auto-enrolled in Intune.


More about how to enroll Windows Computer into Microsoft Intune you will find in my following post.

Enroll Windows Computer into Microsoft Intune




So far the Configuration Manager client isn’t installed on nb-John-external but will be the next minutes because of our line-of-business app we configured previously.


Regarding the Microsoft Endpoint Manager admin center the Configuration Manager client was installed.



On the client you should now see the following process which will download and install the Configuration Manager client.


Finally the Configuration Manager client is installed.



You can also check this process in the ClientIDManagerStartup.log file under C:\Windows\CCM\Logs

Here you can see the Configuration Manager client from an external Azure AD joined computer.




DNS CNAME records internal and public

We also need to publish two CNAME DNS records, one internal in our on-premise network and one public in the internet.

The internal will be used by the MECM itself to be able to resolve the public IP address from the Cloud Management Gateway to establish a connection and secure channel with it.

The public CNAME DNS record will be used by the external Azure AD joined internet clients to establish a secure connection to the Cloud Management Gateway.

Below you can see if the on-premise MECM is connected to the cloud management gateway.


Create the internal CNAME DNS record.



You can also use the Connection analyzer from MECM to test the Cloud management gateway connection.




Distribute Applications through the CMG

To distribute applications to external clients by using our new CMG, we have to add the new CMG as new distribution point.


Below for testing I will distribute Office Professional 2019.


Add a distribution point.


As this is a new installation in my lab environment from Microsoft Endpoint Configuration Manager, I will distribute the application to the cloud management gateway and on-premises.



Below you can see that the distribution from Office Professional 2019 to the new Cloud Management Gateway is still in progress.




Therefore on the external internet clients so far is no application available at the Software Center.


Finally a few minutes later Office Professional 2019 was successfully distributed on the Cloud Management Gateway.


Further Office Professional 2019 is deployed to all users, therefore it is now also available in the Software Center for external internet clients as shown below.






Co-management workloads

You don’t have to switch the workloads, or you can do them individually when you’re ready. Configuration Manager continues to manage all other workloads, including those workloads that you don’t switch to Intune, and all other features of Configuration Manager that co-management doesn’t support.

If you switch a workload to Intune, but later change your mind, you can switch it back to Configuration Manager, although there might be an impact. For example, Windows and Office versions will remain at a later version if installed by Intune.

Co-management supports the following workloads:

  • Compliance policies
  • Windows Update policies
  • Resource access policies
  • Endpoint Protection
  • Device configuration
  • Office Click-to-Run apps
  • Client apps

Source: https://learn.microsoft.com/en-us/mem/configmgr/comanage/workloads



Switch Workloads from Configuration Manager to Intune

For Windows 10 or later devices that are in a co-management state, you can have Microsoft Intune start managing different workloads.

Choose Pilot Intune to have Intune manage the workloads for only clients in the Pilot group.

If you are not ready to move workloads to Intune, select Configuration Manager.

The different workloads will be described in detail in the following article.

Co-management workloads
https://learn.microsoft.com/en-us/mem/configmgr/comanage/workloads


When you configure a workload for Pilot Intune above, you have to select a device collection to be the pilot group in the tab Staging.


Before you switch any workloads, make sure you properly configure and deploy the corresponding workload in Intune. Make sure that workloads are always managed by one of the management tools for your devices. When you switch a co-management workload, the co-managed devices automatically synchronize MDM policy from Microsoft Intune.

Source: https://learn.microsoft.com/en-us/mem/configmgr/comanage/how-to-switch-workloads


How to switch Configuration Manager workloads to Intune
https://learn.microsoft.com/en-us/mem/configmgr/comanage/how-to-switch-workloads




Links

What is co-management?
https://learn.microsoft.com/en-us/mem/configmgr/comanage/overview

Enable cloud attach for Configuration Manager
https://learn.microsoft.com/en-us/mem/configmgr/comanage/how-to-enable

Plan for the CMG in Configuration Manager
https://learn.microsoft.com/en-us/mem/configmgr/core/clients/manage/cmg/plan-cloud-management-gateway

PKI certificates for clients
https://learn.microsoft.com/en-us/mem/configmgr/core/plan-design/network/pki-certificate-requirements#pki-certificates-for-clients

Cloud management gateway overview
https://learn.microsoft.com/en-us/mem/configmgr/core/clients/manage/cmg/overview

CMG client authentication
https://learn.microsoft.com/en-us/mem/configmgr/core/clients/manage/cmg/plan-client-authentication

Configure client authentication for cloud management gateway
https://learn.microsoft.com/en-us/mem/configmgr/core/clients/manage/cmg/configure-authentication

Token-based authentication for cloud management gateway
https://learn.microsoft.com/en-us/mem/configmgr/core/clients/deploy/deploy-clients-cmg-token

How to manage clients in Configuration Manager
https://learn.microsoft.com/en-us/mem/configmgr/core/clients/manage/manage-clients

How to prepare internet-based devices for co-management
https://github.com/MicrosoftDocs/memdocs/blob/main/memdocs/configmgr/comanage/how-to-prepare-Win10.md

PKI certificate requirements for Configuration Manager
https://learn.microsoft.com/en-us/mem/configmgr/core/plan-design/network/pki-certificate-requirements

Co-management workloads
https://learn.microsoft.com/en-us/mem/configmgr/comanage/workloads

How to switch Configuration Manager workloads to Intune
https://learn.microsoft.com/en-us/mem/configmgr/comanage/how-to-switch-workloads