Hello,
Just tossing this in there as a best practice, having worked with disabling multiple accounts before...
1. Create a script to get a list of computers and corresponding local user accounts your found.
2. Review the accounts with other people that may have some insight to accounts you may not be familiar with or research online what they are for, call vendors etc...
3. Create and execute script to disable approved user accounts.
Some applications create local accounts and if you disable them they don't work anymore.
That is bad.