What are the three most common project management risks

Question

A project risk is defined by PMI as, "an uncertain event or condition that, if it occurs, has a positive or negative effect on one or more project objectives". According to PMBOK 6th Edition, the risk exists at two levels within every project; as individual project risk and overall project risk.

As per your project-related experiences, what are the three most common project risks that you have come across?

Answer 1

1. Schedule and cost impacts resulting from assorted technical risks (e.g. inability to get two systems to talk to one another in a timely, cost-effective manner)

2. Unpredictable resource allocation

3. Impacts from stakeholders whose expectations are not being effectively managed