This tutorial explains how you can use a scope action to rename the local Administrator's account to a dynamic name on a set of machines.
For security compliance, the local administrator account of all machines must be renamed to a unique name. The name format selected is machineName_admin where machineName is the NetBIOS name of the computer.
Create a new scope action, define its name and click on Next.
Under Scope, select the Computers object type and define the list of machines to process (see: Defining the Scope). Click on Next.
Under Actions, double click on Add New to start the Action Module property window.
Under Execute the following Action(s), click on Add/Remove > Execute Computer Action > Local Account Database > Rename Local User.
In the Set Arguments window, select the User Name argument and set it to: Administrator.
The select the New Account Name argument and click on the Set Dynamic Value Definition link in the task panel.
In the Dynamic Value Definition window, click within the edit field and press the [Insert] key.
Select the NT Account Name attribute from the menu.
in the edit field, type _admin just after the NT Account Name attribute.
Complete your scope action and run it.
Once the scope action has been executed, you should check which machines were processed successfully and which machines failed.
Right-click on the scope action object and select View Last Run's Failed Nodes.
Review the Scope Action Log for failed computers and the reason why they couldn't be processed.
If one or more machines failed to be processed in this run because they were temporarily unavailable, you can select to re-run the scope action only for these failed computers at a later time. To do so, select the scope action, right-click on the mouse and select Re-Run on Failed Objects.
You can also schedule the scope action to re-run periodically using the execution mode: Failed Objects Only - Merge Output Data (see: Scheduling a Scope Action). This method of execution only processes the machines which failed during the previous run.