Change the tamper protection password

If you use role-based administration:

You must have the Policy setting - tamper protection right to configure a tamper protection policy.
You cannot edit a policy if it is applied outside your active sub-estate.

To change the tamper protection password:

Check which tamper protection policy is used by the group(s) of computers you want to configure.
See Check which policies a group uses.
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.