Check which tamper protection policy is used by the group(s) of
computers you want to configure.
In the Policies pane, double-click Tamper
protection. Then double-click the policy you want to
change.
In the Tamper Protection Policy dialog box, click Change under the
Password box. In the
Tamper Protection Password dialog box,
enter and confirm a new password.
Tip The password
should be at least eight characters long and contain mixed-case letters and numbers.