Whenever large IT-enabled change occurs, such as when a new ERP system is rolled out, many users tend to resist the change. On one hand, user resistance can positively affect an implementation as it may indicate potential flaws in the implementation. On the other hand, user resistance has been a root cause of why many implementations completely fail or do not reach the projected benefits. This article describes the principal types of resistance and describes specific strategies that CIOs and other institutional leaders can use in dealing with this resistance.