To create an Active Directory account to be used by a third-party app for authentication, you can follow these general steps:
1. Launch the Active Directory Users and Computers administrative tool on your domain controller or a server with Active Directory administrative tools installed.
2. Navigate to the container or organizational unit (OU) where you want to create the user account. Right-click on the container or OU and select "New" and then "User" to create a new user account.
3. Provide the necessary information for the user account, such as the username, full name, password, and any additional details required.
4. Ensure that the user account has the appropriate permissions and group memberships. Depending on the requirements of your third-party app, you may need to assign specific group memberships or permissions to the user account.
5. Save the user account and exit the Active Directory Users and Computers tool.
Once you have created the Active Directory user account, you can provide the credentials (username and password) of this account to the third-party app for authentication purposes.
It's important to note that when creating an account for a third-party app, you should follow the security best practices recommended by your organization, such as using strong passwords, applying the principle of least privilege, and regularly reviewing and monitoring the account's usage.