You can use the following steps to upgrade from Active Roles Add-on for Skype for Business Server to Skype for Business Server User Management:

1. Identify the Active Directory topology option used by the add-on. The possible options are:
   • Single forest
   • Multiple forests - Resource forest
   • Multiple forests - Central forest

   In case of multiple forests, note down the Distinguished Name of the container in which the add-on creates shadow accounts.

2. Uninstall the earlier version of the add-on from Active Roles Add-on Manager, and then uninstall the add-on from the system
3. Upgrade to Active Roles version 8.0 LTS. For upgrade instructions, see the Active Roles 8.0 LTS Quick Start Guide.
4. Deploy Skype for Business Server User Management. Depending on the Active Directory topology option used by the add-on:
   • In case of single forest, follow the Deployment in a single-forest environment instructions.
   • In case of multiple forests, follow the Deployment in a multi-forest environment instructions. Configure the Built-in Policy - Skype for Business - Master Account Management Policy Object to match the topology option and container for shadow accounts you identified in Step 1.

The following instructions elaborate on these steps. The instructions apply to Active Roles Add-on for Skype for Business Server 2.1.

To identify the Active Directory topology option used by the add-on

1. In the Active Roles console tree, select Applications | Active Roles Add-on for Skype for Business Server.
2. Review the add-on settings in the Configure Add-on area in the details pane:
   • The Active Directory topology option is selected in the Active Directory topology box.
   • If a multi-forest option is selected, the Distinguished Name of the container in which the add-on creates shadow accounts is specified in the Container for shadow accounts/contacts box.

If the add-on was configured with the resource forest or central forest option, you need to configure and apply the Built-in Policy - Skype for Business - Master Account Management Policy Object as follows.

To configure and apply the Master Account Management policy

1. In the Active Roles console tree, select Configuration | Policies | Administration | Builtin.
2. In the details pane, double-click the Built-in Policy - Skype for Business - Master Account Management Policy Object.
3. In the Properties dialog box that appears, go to the Policies tab, and double-click the entry in the list of policies.
4. In the Properties dialog box that appears, go to the Forest Mode tab and select the option that matches the Active Directory topology option that was used by the add-on:
   • If the add-on was configured with the option Multiple forests - Resource forest, then select the Resource forest option on the Forest Mode tab.
   • If the add-on was configured with the option Multiple forests - Central forest, then select the Central forest option on the Forest Mode tab.
5. Go to the Shadow Account tab and configure the policy to use the container for shadow accounts that was used by the add-on: Click This container, click Browse, and select the container.
6. Click OK to close the Properties dialog for the policy entry.
7. In the Properties dialog box for the Policy Object, click Apply, go to the Scope tab, and then click the Scope button on that tab.
8. In the dialog box that appears, add the containers that hold the master accounts you managed using the add-on, and then click OK.
9. Click OK to close the Properties dialog box for the Policy Object.

Skype for Business Server User Management recognizes the existing master accounts, enabling Active Roles to manage their shadow accounts for Skype for Business Server in the same way as when using the add-on. To expedite the recognition of the existing master accounts, you might execute the Master Account Management task without waiting for its scheduled run: In the Active Roles console, navigate to the Configuration/Server Configuration/Scheduled Tasks/Builtin container, right-click the object Skype for Business - Master Account Management in that container, point to All Tasks, and then click Execute.