The short version
The Azure AI Fundamentals credential does not expire, so there is nothing to renew. If you fail AI-901, you wait 24 hours for the second attempt and 14 days between attempts after that, with at most five attempts in 12 months. Below is the detail, including what Microsoft does not say.
Does the credential expire?
No. Microsoft’s renewal page says that fundamentals certifications do not expire. The same page explains that associate, expert, and specialty certifications must be renewed each year with a free online assessment. That renewal process does not apply to this credential.
Two things follow from this. First, you never have a renewal window to track, and no email reminder will arrive for it. Second, the credential name stays attached to your Microsoft Learn profile as long as you keep access to the account you used to register.
That last point matters more than it sounds. Microsoft strongly recommends registering for exams with a personal Microsoft account. If you register with a work or school account and later leave the organization, your exam records are lost and cannot be recovered. A credential that never expires is only useful if you can still sign in to the account that holds it.
What “no expiry” does not mean
A credential without an expiry date can still become less useful over time. The skills outline can change, and the exam can be updated while the credential name stays the same. AI-901 itself is proof: it replaced AI-900, which Microsoft retired on June 30, 2026. Anyone who passed AI-900 earlier holds a different exam record from someone who passes AI-901 now. Microsoft’s pages do not describe a conversion or an upgrade path between the two, so check your Learn profile if you hold the older one.
Retake rules
Microsoft’s retake policy for fundamentals exams is short:
- Fail once and you must wait 24 hours before the second attempt.
- Every attempt after that needs a 14-day wait, up to five attempts.
- You may not take the same exam more than five times in 12 months, counted from your first attempt. If you fail five times, you can try again 12 months after the first attempt.
- You cannot retake an exam you have passed, unless your credential has expired. Since this one does not expire, a passed AI-901 stays passed.
- You pay for each retake. Microsoft prices the exam by country, so look up the current amount when you schedule.
Can the waiting period be waived?
Only in one case: internet trouble or equipment failure during the exam, with a Pearson VUE case number. Microsoft says no other reason qualifies. A bad day, a surprising topic, or a calendar conflict does not count.
A realistic retake timeline
Say you fail on a Monday. Your second attempt can start on Tuesday, but that is rarely a good plan. A better use of the first week is to read your score report, which shows a bar for each skill area. Pick the shortest bars, study those, and book the retake for a date at least a week or two out. If you fail again, the 14-day wait applies, which gives you a natural block of study time. Five attempts in a year is a ceiling, not a target.
What happens when the exam is updated?
Microsoft updates the English version first. The AI-901 page says the English version was updated on April 15, 2026, and that localized versions follow about eight weeks later, though not always on schedule. If your study material is older than the current outline, you may be studying topics that left the exam. Compare your notes against the current domains explained page and Microsoft’s study guide.
The AI-901 page lists no retirement date. Microsoft does not say how long the exam will stay in its current form, and it has not published a schedule for future updates. Watch the study guide for a new “skills measured” date before you book.
What Microsoft does not publish
- A replacement or conversion rule for people who passed AI-900.
- Any limit on how long you can wait between a failed attempt and a retake, apart from the minimum waits.
- The number of questions on the exam, which matters for planning a retake. See the exam format page for what is known.
More guides for AI-901
- AI-901 Sample Questions With Answers
- Is AI-901 Hard? An Honest Difficulty Check
- AI-901 Prerequisites: What to Know First
- Is AI-901 Worth It? An Honest Look
- AI-901 Cheat Sheet: Key Facts to Review
- AZ-900 vs AI-901: Which First?
- AB-900 vs AI-901: Which Exam First?
- AWS AIF-C01 vs AI-901: Which First?
Next step
If you are planning a first attempt, the study plan helps you avoid needing a second one. If you are retaking, read the exam format page for how the score report works, then try our AI-901 practice tests to check the areas where your score report showed short bars.
Frequently asked questions
Do I have to renew AI-901?
No. Microsoft states that fundamentals certifications do not expire.
How long must I wait after failing?
24 hours before the second attempt, then 14 days between each later attempt.
How many times can I take it?
Up to five times within 12 months from your first attempt.
Does my old AI-900 still count?
Microsoft’s pages do not say. AI-900 retired on June 30, 2026. Check your Learn profile for what it shows.