Advanced OPC Data Logger

OPC & DCOM Configuration: User Creation & Access Permissions on Windows 10, 11, Server 2019, 2022

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2. Creating a user and giving access permissions

2.1 Adding a user

You need to create a user that has permissions to run and use DCOM applications. To increase security, you can create a user with restricted permissions. You need to have administrator permissions to add a user.

Attention! You need to create users with the same name and password on both computers (where the server and the client are installed). Later on, you should run the OPC client using this user account.
You can do the following to access the computer management console (fig. 2):

  1. Open Windows Explorer using the taskbar icon or the Win+E keyboard shortcut;
  2. Select the Computer item in the left part of the Explorer;
  3. Click the right mouse button.
  4. Select Manage.

Access to the computer or server management console
Fig. 2 Access to the computer or server management console

Adding a new user
Fig. 3 Adding a new user

New user properties
Fig. 4 New user properties

You can create a user with any name. The password must be specified and must not be empty.

2.2 Giving permissions

To allow the new user to work with DCOM, you should add the user to the corresponding DCOM Users group.

User groups
Fig. 5 User groups

Adding a user to the group
Fig. 6 Adding a user to the group

Manually type the username in the new dialog box. It is "opc" in this example. Then click OK.

Selected user
Fig. 7 Selected user

User in the group
Fig. 8 User in the group

Note. You can create several users and add them to one DCOM Users group. You can also add existing users to this group.

Related articles:

OPC and DCOM Configuration on Windows 10, 11, Windows Server 2019, 2022