enable an action stop a service or perform some operation that may enable a task or configuration routine to perform in such cases the cleanup sequence may put various items in a condition where the configuration sequence may execute and the configuration sequence may perform subsequent operations on the items in order to complete any configuration that may be done for each task in block 414 a configuration routine may be defined in block 416 and a rollback routine may be defined in block 418 a configuration routine may be a script or other executable file that performs any type of action that configures a system according to the task such routines may include loading data or executable files setting registry values modifying configuration files configuring hardware settings or any other task in some cases a configuration routine may engage different services or devices during execution a rollback routine in block 418 may be defined to undo the effects of a configuration routine in some cases a rollback routine may undo each action of a configuration routine while in other cases a rollback routine may set a system in a previous operable state the prerequisites cleanup sequence configuration routines and rollback routines may be organized together into an installation sequence in block 420 and deployed the foregoing description of the subject matter has been presented for purposes of illustration and description it is not intended to be exhaustive or to limit the subject matter to the precise form disclosed and other modifications and variations may be possible.