When a key provider’s issue delays a main deliverable, the project manager should first engage directly with the provider to understand the situation, assess impacts, and identify recovery options. Scheduling a meeting with the provider (D) enables fact-finding (root cause, revised dates), negotiation (expedite, partial delivery, additional resources), and alignment on a corrective action plan and monitoring cadence. This is consistent with procurement management and issue management: collaborate first, then escalate if required. Immediately replacing the provider via change request (A) may be costly, slow, and contractually complex, and should be considered after understanding feasibility and recovery options. Meeting “all stakeholders” (B) is broader than necessary as a first step and can waste time before having concrete information. Seeking sponsor guidance to impose penalties (C) may be appropriate later if the provider is noncompliant and contractual remedies are needed, but leading with penalties can damage collaboration and still may not restore schedule. Provider engagement first supports timely recovery and informed escalation.