Failure and retake · Understand
Retaking the CISSP after a failure
In the accounts analysed, candidates most often re-register between one and two months after their failure; the official retake conditions are set by ISC2. The recovery that works does not mean re-reading everything: it means targeting the domains below the passing standard, changing one study material and fixing time management.
People do retake the CISSP, and usually soon: in the accounts analysed, re-registration happens one to two months after the failure. This page describes what candidates who failed did next — when they re-registered, what the new attempt cost them, and what they changed — based on fifty public accounts devoted to failure and retaking, between July 2023 and June 2026, including twenty-three accounts of a pass obtained after one or more failures.
How long do candidates wait before retaking?
The gaps candidates set themselves cluster in a range of about one to two months:
- “I will be retaking in 40 days”
- “You should be able to schedule a retake in a month”
- “I scheduled my second attempt 6 weeks later”
- “I booked for it again after 2 months”
These waits are personal choices, not obligations; the current re-registration conditions are published by ISC2 on isc2.org, and should be checked before setting a date.
Break, or straight back to it?
Both strategies coexist, and the deciding factor is the number of failures already behind the candidate. After a first failure, quick re-registration dominates: the format is still fresh, so is the vocabulary, and several accounts describe the failure itself as the best preparation resource available.
“Failing the exam so far was the best possible source I could have gotten to prepare me for the next attempt as I now knew what to expect and what to practice for.”
After two failures or more, the advice reverses. The community prescribes a clean break: “Take the weekend off or a week. You need to step away and then come back to it or you will burn out”. Some accounts describe breaks of several months. The candidate who passed on the sixth attempt put in only two weeks of targeted preparation, but after a long interruption.
One point of caution appears in the accounts: a second attempt already paid for can push a candidate to retake sooner than is advisable. One candidate writes that he wanted to give up, then changed his mind so as not to waste the attempt he had bought. The effect on motivation is real, but it does not replace being ready.
How much does a new attempt cost?
The amounts below are sums in US dollars reported by candidates between 2023 and 2026; the official prices applicable in your region are on isc2.org.
| Item | Amount reported by candidates | Note |
|---|---|---|
| Exam alone | $750 | One candidate puts it at $749 a question |
| Package with a second attempt included | $948 and $950 | About $200 more than the plain voucher, according to one account |
| Rescheduling | $50 per reschedule | One candidate accumulates three |
| Exam-style question bank | about $200 | The expense most often added after a failure |
The bill across several attempts becomes a real issue. One candidate who failed twice writes that he is waiting for the next discount, both for the price and to recover financially, before considering a third attempt. Employer funding changes everything: one mentions an 80% reimbursement, another specifies that his company only reimburses on a pass. Two forms of help for candidates who failed are also mentioned: free course material after two failures, half price after one, and volunteer mentoring.
The “second attempt included” option sold by ISC2 is mentioned by seven candidates out of the fifty accounts in this theme, always positively, mainly for its effect on stress: “I wanted the insurance of the second attempt if I failed”. Its availability is not continuous: one candidate notes that it was not offered at the time of his April 2025 attempt. A fuller breakdown of the amounts, including those found in other sets of accounts, is in the price of the CISSP exam.
Do you have to restudy everything before retaking?
The consensus in the accounts is clear: no. The recurring instruction fits in one sentence: “Don’t reread the material—use it as a reference to understand why missed answers were incorrect”.
The recovery described by those who passed follows three stages. First, prioritise the domains flagged below the passing standard on the score report, while keeping the solid domains ticking over: “brushed up on my weak areas […] but still did light activities with my strong domains”. Then, change what did not work — a study material, a question bank, a way of reading. Finally, work on error analysis rather than on the score: “Don’t pay attention to your scores […] pay attention to WHY you got the answers wrong.”
The most radical case is that of a professional with more than ten years in a SOC, who passed on the sixth attempt: “I didn’t reread the books. I focused on practice questions and mindset”. He had previously read the Sybex manual from cover to cover, twice, and failed.
This is exactly the way of working Cybridia is built for: going back over your mistakes domain by domain across 4,298 explained questions and 8 practice exams, looking for the reason behind each gap rather than for a percentage.
What did those who failed and then passed actually change?
Here is what the twenty-three accounts of a pass after a failure describe as actual changes between the failed attempt and the successful one.
| Change | Presence in the 23 accounts |
|---|---|
| Adding an “exam-style” question bank | 9 accounts cite the same demanding bank |
| Switching main study material to a concise, mind-map-based manual | about 10 accounts |
| Explicitly working on reasoning with the community’s reference videos | cited in around ten accounts |
| Slowing down and reading the stems like a lawyer | recurring |
| Sleeping, taking a breath, reducing stress | recurring |
| Targeting weak domains instead of re-reading everything | recurring |
| Using AI as a tutor for weak areas | 2025-2026 trend |
On the demanding question banks, the argument put forward is not resemblance but difficulty: “I found QE questions harder than the actual CISSP. They helped me built that mental toughness”.
The use of AI calls for a caveat that the accounts raise themselves. Some candidates use it usefully to “analyze my misses, find patterns in my thinking, and drill weak areas”. But one candidate who failed also reports: “Chatgpt and Gemini said I was gonna ace it LOL”, and one commenter warns that relying on an AI as a source of truth exposes you to unpleasant surprises.
An atypical path completes the picture: one candidate wrote around 1,800 practice questions himself over three months and rates it his single biggest gain — “actually writing CISSP practice questions is really, really hard. It makes you think, and you really need to know the material.”
How do you fix time management on exam day?
Three fixes recur, and they have nothing to do with how much you know.
The first is timed practice. To a candidate who ran out of time at question 117, the top-voted reply fits on one line: “Take more practice exams and time yourself”.
The second concerns what happens after the hundredth question. The instruction is counter-intuitive and explicit:
“if you do get to 100 questions and the exam doesn’t finish: SLOW DOWN. The exam will grade your last 75 answers, so don’t rush and take your time!!”
One caveat is needed: the mention of “the last 75 answers” is a candidate’s claim that no official documentation confirms, and it assumes the former cap of 175 questions — since April 2024, at most 50 remain after the hundredth. The published behaviour of adaptive scoring is explained in the score of 700 out of 1000. What to keep from this account is the behaviour, not the rule — do not speed up after the hundredth question.
The third is a prohibition: never click at random to “finish” the exam. Running out of time is not an automatic failure — candidate accounts contain passes recorded when the timer expired at 120, 125, 130 and 149 questions, as well as a pass at question 150 with thirty seconds left, eleven years after a first failure on the former format.
How many attempts does it take in the accounts?
Here is the distribution of the twenty-three passes obtained after a failure, by which attempt finally succeeded.
| Successful attempt | Number of accounts |
|---|---|
| 2nd attempt | 11 |
| 3rd attempt | 5 |
| 4th attempt | 3 |
| 5th attempt | 1 |
| 6th attempt | 3 |
| Total | 23 |
What this table shows is that paths involving three, four or six attempts exist and end in certification. It describes published accounts, not a pass rate on retakes.
The longest accounts confirm it. A SOC professional who passed on the sixth attempt writes: “Six attempts taught me this: quitting is the only guaranteed failure”. Another passed twenty-one years after his first attempt, following a stroke that occurred between the fifth and the sixth. A third, who passed after fifteen years and six sittings, describes bluntly what it cost him: “This exam has made me feel so completely stupid.”
To understand what caused the first attempt to fail before planning the next one, see why people fail the CISSP; on where these accounts come from, see our method and sources.
Frequently asked questions
How long do you have to wait before retaking the CISSP?
One to two months in most cases: the accounts describe re-registrations at forty days, six weeks, two months. These are individual choices made by candidates; the official retake conditions are published by ISC2 on isc2.org.
Do you have to restudy everything before retaking the CISSP?
No. Effective recovery targets the domains flagged below the passing standard on the score report, keeps the rest lightly maintained and changes what did not work. One candidate who passed on the sixth attempt did not reopen the books and concentrated on questions and reasoning.
How many attempts does it take to get the CISSP?
Just one more in half the accounts: among the twenty-three passes after a failure, eleven came on the second attempt, five on the third, three on the fourth, one on the fifth and three on the sixth — a distribution of published accounts, not a pass rate.
What is the second-attempt-included option offered by ISC2?
A package sold by ISC2 that includes a second attempt in case of failure, mentioned by seven candidates out of fifty, always positively. Its availability varies over time; its current terms and price should be checked with ISC2.
How do you avoid running out of time on the second attempt?
Those who passed describe three fixes: taking timed practice exams, deliberately slowing down after the hundredth question, and never clicking at random to finish. Candidate accounts contain several passes obtained even though the time had run out.
Where does this information come from?
This article draws on the public reports of several thousand candidates, published over the last three years (24 July 2023 to 24 July 2026) and synthesised topic by topic. Quoted extracts are anonymised. Our method in detail.
- Why do people fail the CISSP?Preparation that is too technical, mindset-only study, unsuitable materials, poor time management: the eight causes of CISSP failure found in candidate.