Guides
Microsoft licensing buying guides
Practical, no-fluff walkthroughs that answer the licensing questions most buyers get wrong — written by specialists who've worked inside SAM consultancies.
What you'll find here
Each guide is a deep dive on a single licensing question — the kind a Microsoft partner would normally charge €200/hour to answer. We publish them free because half our support tickets used to be "which one should I buy?" and writing the answer once saves everyone time.
- Edition selection (Home vs Pro, Standard vs Datacenter, Family vs Business).
- Licensing models explained (OEM, Retail, MAK, KMS, CAL, Core, NFR).
- Step-by-step install, activation and migration walk-throughs.
- End-of-life schedules and the right time to upgrade.
All guides
Which Office Version Should I Buy? (2026 Buyer's Guide)
Office 2021, 2024 or Microsoft 365? A practical guide to picking the right Office edition by use case, hardware and budget.
9 min read· Updated 2026-05-12Office 2024Microsoft 365Buyer's guideRead the guide →Windows Server Licensing Explained (Plain English)
Cores, CALs, Standard vs Datacenter, virtualization rights — Windows Server licensing demystified with real-world examples.
11 min read· Updated 2026-04-30Windows ServerLicensingCALRead the guide →SQL Server: Server+CAL vs Per-Core Licensing
Decide between SQL Server's two licensing models with a clear break-even calculation and worked examples.
Read the guide →OEM vs Retail Windows Keys — What's the Difference?
OEM Windows keys are cheap but tied to one motherboard. Retail keys are transferable. Here's exactly what changes and which you should buy.
5 min read· Updated 2026-03-18Windows 11LicensingRetailRead the guide →How to Activate Windows 11 With a Product Key (Step by Step)
Step-by-step guide to activating Windows 11 with a retail product key — fresh install, upgrade from Windows 10, troubleshooting.
6 min read· Updated 2026-02-09Windows 11ActivationHow-toRead the guide →How to Install Office 2024 — Pro Plus, Home & Business
Complete step-by-step guide to installing Office 2024 from your product key, including the Office Deployment Tool route for Pro Plus.
7 min read· Updated 2026-03-02Office 2024InstallHow-toRead the guide →Office 2024 vs Microsoft 365: Which One Should You Buy? (2026)
Head-to-head comparison of Office 2024 (one-time purchase) and Microsoft 365 (subscription) — total cost of ownership, cloud storage, multi-device support and feature differences.
10 min read· Updated 2026-05-20Office 2024Microsoft 365ComparisonRead the guide →Windows 10 vs Windows 11 — Should You Upgrade in 2026?
Windows 10 hit end-of-support in October 2025. Here's whether to upgrade in-place, buy a Windows 11 key, or stay on 10 with ESU.
8 min read· Updated 2026-05-28Windows 10Windows 11UpgradeRead the guide →Windows 11 Home vs Pro — Which Edition Do You Need?
BitLocker, Hyper-V, Remote Desktop, domain join — the seven Pro-only features that decide whether you should pay the upgrade.
6 min read· Updated 2026-04-10Windows 11EditionComparisonRead the guide →Office 2024 vs Office 2021 — Worth the Upgrade?
Three years of feature backports separate Office 2024 from Office 2021. Here's what's actually new and whether the price gap justifies the jump.
7 min read· Updated 2026-03-25Office 2024Office 2021ComparisonRead the guide →Microsoft 365 Family vs Personal — Worth the €30 Difference?
M365 Personal covers one user. Family covers six and includes 6 TB of pooled OneDrive. The math, the catches and which you should buy.
5 min read· Updated 2026-04-22Microsoft 365ComparisonRead the guide →SQL Server Standard vs Enterprise — When to Pay 4× More
Enterprise costs roughly 4× Standard. The features that justify the gap are narrow but important. Decide with our cheat sheet.
6 min read· Updated 2026-02-28SQL ServerLicensingRead the guide →Best Office Suite for Students in 2026
Free Microsoft 365 from your university, perpetual Office 2024 Home & Student, or LibreOffice — the right pick by budget and degree.
5 min read· Updated 2026-05-05OfficeStudentsBuyer's guideRead the guide →How to Transfer a Windows License to a New PC (Step by Step)
Move your retail Windows 10 or 11 key to a new computer in 10 minutes — deactivate the old PC, link to your Microsoft account, reactivate on the new hardware.
6 min read· Updated 2026-06-01Windows 11ActivationLicensingRead the guide →Fix Activation Error 0x80072F8F (Windows & Office)
Error 0x80072F8F means Windows can't reach Microsoft's activation servers over TLS. Here's exactly how to fix the root cause in 5 minutes.
4 min read· Updated 2026-05-20ActivationTroubleshootingWindows 11Read the guide →Office Deployment Tool — Plain English Walkthrough
Use the Office Deployment Tool (ODT) to install Office 2024 with the exact apps, language and update channel you need. Full XML reference inside.
8 min read· Updated 2026-05-10Office 2024DeploymentITRead the guide →Windows 11 TPM Bypass — What You're Actually Giving Up
You can install Windows 11 on unsupported hardware by bypassing TPM 2.0 and Secure Boot — here are the real risks Microsoft warns about.
6 min read· Updated 2026-04-22Windows 11TPMSecurityRead the guide →How to Choose a Microsoft 365 Business Plan (Basic, Standard, Premium, Apps)
Microsoft sells four Business plans. Here's the decision tree, real per-user prices and the security cliff between Standard and Premium.
7 min read· Updated 2026-05-18Microsoft 365BusinessBuyer's guideRead the guide →How to Find & Back Up Your Windows Product Key
Recover your Windows 10/11 product key from the registry, BIOS or Microsoft account — and save a copy somewhere safer than the sticker on the laptop.
4 min read· Updated 2026-03-30Windows 11BackupRead the guide →How to Cleanly Uninstall Old Office Before Installing Office 2024
Office 2016, 2019, 2021 and Microsoft 365 can leave activation conflicts when you install Office 2024. Here's the clean-uninstall procedure that always works.
5 min read· Updated 2026-02-14Office 2024MigrationTroubleshootingRead the guide →Windows Server 2025 Upgrade Path (from 2016, 2019, 2022)
Supported in-place upgrade paths to Windows Server 2025, the version-skip rules, downtime expectations and rollback options.
8 min read· Updated 2026-05-04Windows ServerUpgradeITRead the guide →How to Set Up Outlook 2024 with IMAP (Gmail, iCloud, Generic)
Add a Gmail, iCloud or generic IMAP account to Outlook 2024 in under 5 minutes — including the app-password workaround Google and Apple now require.
5 min read· Updated 2026-04-12OutlookOffice 2024EmailRead the guide →How to Enable BitLocker on Windows 11 Pro (the Safe Way)
Turn on BitLocker drive encryption without losing your data — pre-flight checks, the TPM-only vs PIN modes, and recovery-key best practices.
6 min read· Updated 2026-03-05Windows 11BitLockerSecurityRead the guide →How to Activate Office Without Internet (Phone Activation Walkthrough)
No internet on the target PC? Activate Office 2024 (or any perpetual Office) by phone using the Microsoft activation IVR. Step-by-step.
5 min read· Updated 2026-02-28Office 2024ActivationTroubleshootingRead the guide →Windows 10 ESU Explained — What You Pay, What You Get
Windows 10 reached end-of-support in October 2025. Extended Security Updates buys 1–3 more years of patches. Here's the price, the rules and the alternatives.
6 min read· Updated 2026-05-25Windows 10ESUSupportRead the guide →Visio 2024 vs Visio Plan 1 and Plan 2
Compare Visio Standard and Professional 2024 with Visio Plan 1 and Plan 2, including desktop apps, collaboration, licensing and practical buying checks.
8 min read· Updated 2026-10-03VisioMicrosoft 365Perpetual licencesRead the guide →Project 2024 vs Project Online and Planner
Compare Project 2024 with Microsoft Planner subscriptions, understand Project Online's retirement, and choose the right scheduling tools for your team.
9 min read· Updated 2026-10-03ProjectPlannerProject OnlineRead the guide →Office 2024 for Mac vs Windows: Buyer's Guide
Compare Office 2024 for Mac and Windows by app, feature and licence type, then check platform compatibility before buying an emailed Microsoft product key.
9 min read· Updated 2026-10-03Office 2024MacWindowsRead the guide →How to Spot Fake Microsoft Keys Before You Buy
Learn how to assess Microsoft key sellers, EU resale rights, activation evidence and refund terms, with practical checks before and after your purchase.
10 min read· Updated 2026-10-03Licence keysBuyer protectionEU resale lawRead the guide →
Related
- Side-by-side product comparisons
- Installation help
- Activation troubleshooting
- Magazine — daily Microsoft licensing news
Frequently asked
- Are these guides written by AI?
- No. Each guide is drafted by a former SAM (Software Asset Management) consultant and reviewed by a second specialist before publishing. AI is used only for translation into the 22 supported languages.
- How often are guides updated?
- Every quarter, and immediately whenever Microsoft releases a major licensing change (new SKU, product retirement, EOL date shift).
- Can I republish or quote these guides?
- Yes — short quotes with attribution and a link back are encouraged. For full republication, email press@licensevault.net for a CC-BY licence.
- What's the difference between a guide and a comparison?
- Guides answer 'how do I decide?' and 'how does this work?' (e.g. OEM vs Retail, Server CAL math). Comparisons answer 'A or B?' (e.g. Office 2024 vs Microsoft 365). Use guides for context, comparisons for a verdict.