The MS-900 (Microsoft 365 Fundamentals) exam is entry-level by design. It's aimed at people new to cloud services and Microsoft 365, and it's one of the most accessible Microsoft certifications available. That said, "entry-level" doesn't mean you can walk in cold and pass—you still need to understand the concepts, not just recognize the product names.
This guide covers the best study materials for MS-900 in 2026, what each resource is actually good for, and how to structure your preparation. You don't need all of these—pick the ones that match your learning style and available time.
Before choosing study materials, understand what you're preparing for. The MS-900 exam tests four functional areas with approximate weights:
The heaviest weight is on the Microsoft 365 apps and services section—nearly half the exam. Candidates who spend most of their study time on cloud concepts and security often underperform because they don't know the product landscape well enough.
Microsoft provides official free learning resources that should be your foundation before anything else:
Microsoft Learn (learn.microsoft.com): Microsoft's official free learning platform has a dedicated MS-900 learning path. It's organized by module, covers all exam domains, and includes interactive exercises and knowledge checks. The MS-900 learning path typically takes 8-12 hours to complete. This is the single highest-value free resource because it's written by the same team that creates the exam.
Microsoft 365 Documentation: For any product you're unclear on—Teams vs. SharePoint OneDrive permissions, for example, or what Power Automate actually does—the official Microsoft documentation is the authoritative reference. It's dense but accurate. Use it to clarify specific concepts, not as primary study material.
Microsoft 365 Free Trial: If you've never used Microsoft 365, a free trial account gives you hands-on access to the apps and services you're studying. Actually using Teams, SharePoint, and OneDrive builds intuition that's hard to get from reading alone. The admin center is particularly worth exploring—understanding where settings live and what options exist helps with scenario-based questions.
If you want to accelerate preparation or fill gaps that Microsoft Learn doesn't address well, these paid resources are worth considering:
Udemy MS-900 courses: Multiple instructors offer MS-900 courses on Udemy, typically $15-$25 with frequent sales. Look for courses with recent update dates (within the last 6 months) since Microsoft updates exam content periodically. Good Udemy courses go deeper on practical scenarios than Microsoft Learn does. Check reviews and verify the course covers the current exam objectives before purchasing.
Whizlabs MS-900 practice tests: Whizlabs is known for quality practice questions that closely mirror the actual exam style. Their MS-900 package includes multiple practice exams with explanations for each answer. Practice tests are arguably more valuable than additional content review at the final stage of preparation.
MeasureUp practice exams: MeasureUp is Microsoft's official practice test partner. Their MS-900 practice exams are the closest to the real exam in terms of question style and topic distribution. They're more expensive than third-party alternatives but provide the most accurate simulation of what you'll face.
LinkedIn Learning: If you have LinkedIn Premium (or access through an employer), the MS-900 preparation course there is solid. It's well-organized and covers exam domains systematically.
Practice tests are the highest-leverage study tool for MS-900, but only if you use them correctly. Don't just run through questions to accumulate a score. After each practice test:
A pattern of wrong answers in the same area—say, consistently missing questions about Microsoft Purview or Power Platform—tells you where to spend additional review time. One targeted hour on a weak area is worth more than three unfocused hours across all topics.
Most candidates can prepare adequately for MS-900 in 1-2 weeks of part-time study. Here's a realistic schedule:
Days 1-3: Complete the Microsoft Learn MS-900 learning path. Don't rush—actually do the knowledge checks and make note of concepts that aren't sticking. Spend extra time on the Microsoft 365 apps section since it's the largest domain.
Days 4-5: Take your first full practice test. Score it and review every wrong answer. Identify your 2-3 weakest topic areas. Spend focused time on those specific topics using Microsoft Learn or a Udemy video.
Days 6-7: Second practice test. Score and review wrong answers again. At this point, you should be scoring 75%+ to be confident for the real exam (the passing score is 700/1000, roughly 70%).
Day before exam: Light review of your error log from practice tests. Don't cram new content—focus on reinforcing concepts you identified as shaky. Sleep adequately.
For the MS-900 training programs that provide more structured instruction with instructor-led components, they're worth the investment if self-study isn't your preferred learning style or if you're preparing for multiple Microsoft certifications simultaneously.
The MS-900 exam has 40-60 questions delivered in 65 minutes. Question types include:
The passing score is 700 out of 1000. That corresponds roughly to 70% of questions correct, though the exact mapping isn't linear due to Microsoft's scoring methodology. You don't need to be perfect—you need to demonstrate solid foundational understanding across all domains.
After passing, the Microsoft 365 Fundamentals certification doesn't expire. Unlike some advanced Microsoft certifications, MS-900 doesn't require annual renewal. It remains valid as a credential indefinitely, though the technology it certifies knowledge of will evolve over time.
Even on an entry-level exam, certain preparation errors show up repeatedly:
Ignoring the Microsoft 365 product landscape. Many candidates focus on cloud concepts and security because those feel more substantial, then get caught off guard by product-specific questions. "Which Microsoft 365 service provides real-time co-authoring of documents?" or "What is the primary purpose of Microsoft Viva?" require knowing the product portfolio specifically.
Confusing Azure with Microsoft 365. The MS-900 is about Microsoft 365, not Azure. While cloud computing concepts overlap, Azure-specific services (Azure Virtual Machines, Azure SQL, Azure DevOps) are outside the scope of this exam. Some candidates who've studied Azure certifications mix up the two and lose points on Microsoft 365-specific questions.
Not practicing with actual questions. Reading materials helps, but the exam tests application of knowledge in question format. Candidates who only read and never practice struggle with the way questions are phrased—even when they know the underlying concepts. At minimum, take one full practice test before your real exam date.
Underestimating security content. The security, compliance, and identity domain (25-30%) is a full quarter of the exam. Microsoft Entra ID, zero trust, Microsoft Defender, and Purview compliance tools all appear. Candidates who skip this section because "it feels technical" often fall short of passing.
The MS-900 is a confidence-building certification—it's achievable for anyone who puts in 1-2 weeks of focused preparation. Clear the exam, add the credential to your resume and LinkedIn, and you've got a solid stepping stone to the broader Microsoft certification ecosystem.