Failed Your Certification Exam? Retake Policies and Real Costs for CompTIA, Cisco, Microsoft, AWS, ISC2, and ISACA
Nobody plans to fail a certification exam, but it happens to experienced professionals all the time — first-attempt failure rates on exams like CISSP and CISM are substantial, and even "entry-level" exams like Security+ catch people off guard with performance-based questions. What matters is what happens next, and the rules differ dramatically by vendor. Always verify the current policy on the vendor's site before scheduling, but here is how the major programs generally handle retakes.
Retake waiting periods by vendor
CompTIA has the friendliest policy: no waiting period between your first and second attempt — you can rebook for the next available slot. From the third attempt onward, a 14-day wait applies. Every attempt is full price unless you bought a retake voucher bundle upfront.
Microsoft requires a 24-hour wait before your second attempt, then 14 days between subsequent attempts, with a cap on attempts within a 12-month window. Watch for Microsoft's periodic exam offers that include a free retake — when available, they change the math on scheduling early.
AWS imposes a flat 14-day wait between any attempts, with no lifetime attempt limit. Each attempt is full price, though AWS has historically offered retake promotions — check before you book.
Cisco requires a short wait (five calendar days for standard written exams) before retesting, and you cannot retake an exam you have already passed for a period. At roughly $300 to $400 per professional-level attempt, Cisco failures are among the most expensive.
ISC2 (CISSP) escalates: 30 days after your first attempt, longer waits after subsequent attempts, with a cap on attempts per 12-month period. Combined with the exam fee of around $749, a CISSP failure is a genuine financial event — plan your first attempt like it is your only one.
ISACA (CISM, CISA, CRISC) requires 30 days between attempts with an annual attempt cap. This matters extra right now: as we covered in the CISM November 2026 update, a failed October attempt pushes your retake onto an entirely new content outline.
The real cost of failing
The exam fee is only part of it. Add the extra weeks of study time, potentially repurchasing updated materials if a blueprint changes between your attempts (a live risk in 2026 with CISM, Security+ SY0-801, and multiple Cisco exams in transition), and the delayed salary bump the cert was supposed to unlock. A single failure on a $400 exam realistically costs $600 to $1,000 all-in. Two failures can exceed the cost of quality prep by an order of magnitude.
How to make the retake count
Your score report is the most valuable document you own right now. Vendors break results down by domain — study the two or three weakest domains hard rather than restarting your entire prep. Failing by a narrow margin usually means a knowledge-gap problem in specific areas; failing broadly usually means a question-format problem, and the fix is different.
Format problems are the most common and the most fixable. Candidates who know the material still fail because they have never faced the way the exam actually asks: scenario questions with two defensible answers, performance-based questions, ISACA's "BEST answer" phrasing, Cisco's lab items. The fix is drilling with questions that mirror the real exam — which is exactly what our CompTIA, Cisco, Microsoft, AWS, ISC2, and ISACA real exam question sets are built for. The most commonly retaken exams — Security+ SY0-701, CySA+, CCNA 200-301, and AWS SAA-C03 — are all covered. At $39, one set costs a tenth of most retake fees.
One last scheduling rule: never book a retake for the earliest allowed date out of frustration. Book it for when your weakest domain scores on practice questions consistently clear 85 percent. The waiting period is the vendor's rule; readiness is yours.