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About this licence
Microsoft Office 365 E3 12 months – Enterprise-Grade Productivity, Security, and Compliance
Transform your organisation's workflow with Microsoft Office 365 E3, a 12-month subscription that delivers the complete Office desktop suite, enterprise-class email, and advanced security tools in one integrated cloud platform. This is not simply a set of applications; it is a comprehensive digital workplace designed for businesses that need to collaborate securely, manage devices centrally, and meet rigorous compliance standards. Whether you are a growing mid-market company, a regulated enterprise in finance or healthcare, or an IT managed service provider deploying for clients, Office 365 E3 provides the precise balance of productivity and control. Your subscription includes always-up-to-date desktop versions of Word, Excel, PowerPoint, Outlook, OneNote, Publisher, and Access, combined with hosted Exchange email, SharePoint intranet, Microsoft Teams for communication, and 1 TB of OneDrive storage per user. With this annual licence, you gain access to enterprise-grade capabilities like Data Loss Prevention (DLP), eDiscovery, and legal hold, all manageable through a unified admin centre. It is the definitive choice for organisations that have outgrown basic Business plans and require a scalable, secure foundation for modern work.
Key features and benefits
Full Office desktop applications plus online access: Install the classic Office apps—Word, Excel, PowerPoint, Outlook, OneNote, Publisher, and Access—on up to 5 PCs or Macs, 5 tablets, and 5 smartphones per user. Work seamlessly offline and online, with automatic updates ensuring you always have the latest features and security patches.
Enterprise-grade email with 100 GB mailbox: Empower every user with a professional 100 GB mailbox hosted on Exchange Online. Benefit from unlimited in-place archiving, advanced anti-malware and anti-spam filtering, and the ability to send encrypted emails directly from Outlook, protecting sensitive communications.
Unlimited HD video conferencing with Microsoft Teams: Host unlimited online meetings with up to 10,000 participants, complete with screen sharing, custom backgrounds, meeting recordings with automatic transcription, and live captions. Teams serves as the central hub for calling, chat, and collaboration, replacing fragmented communication tools.
1 TB of personal cloud storage with OneDrive for Business: Give each user 1 TB of secure cloud storage to sync, share, and co-author documents in real time. Known Folder Move silently redirects Desktop, Documents, and Pictures folders to OneDrive, protecting critical files without changing user behaviour.
Advanced security and compliance tools: Protect your business data with Data Loss Prevention (DLP) policies that automatically identify and safeguard sensitive information like credit card numbers or health records. Use eDiscovery and legal hold capabilities to preserve and export content for litigation or internal investigations, a critical requirement for regulated industries.
What you get
Digital delivery after purchase
License details and activation instructions included
Suitable for private or business use where the product terms allow
Lizensa support for installation and activation questions
Cloud productivity suite for email, files, meetings and collaboration
Subscription duration and tenant setup should be checked before activation
Suitable for managed business accounts and admin-led rollout
Specifications
Operating system
Cloud, Windows, macOS
Version
Latest
SKU
LZP-0283
Licence
Perpetual / lifetime
Architecture
x64, arm64
Languages
From order to activation
01Order received
02Key verified
03Email delivered
04You activate
Common questions
What are the system requirements for Microsoft Office 365 E3 12 months?
Microsoft Office 365 E3 12 months requires Windows 10/11, macOS, at least 4 GB of RAM (though 8 GB is recommended), and 2 GB of free storage space. An internet connection is needed for download and activation.
What kind of license do I get with Microsoft Office 365 E3 12 months from Lizensa?
Your Microsoft Office 365 E3 12 months license is a perpetual (lifetime) license — buy once and use forever on one device. This means no recurring fees or subscriptions. You'll also receive free updates and security patches from Lizensa.
What's included with my Microsoft Office 365 E3 12 months purchase from Lizensa?
Your purchase includes a genuine Microsoft Office 365 E3 12 months license key, a download link from the official Microsoft website, step-by-step activation instructions, a VAT invoice (EU), and lifetime access to the key in your Lizensa account. All keys are authentic and backed by our 14-day money-back guarantee.
Why is Microsoft Office 365 E3 12 months so much cheaper on Lizensa?
At just €104.90, our Microsoft Office 365 E3 12 months license is up to 86% cheaper than retail because we buy in wholesale volume from European distribution channels and pass the savings directly to you. You get the exact same genuine product — just without the retail markup.
How do I install and activate Microsoft Office 365 E3 12 months from Lizensa?
After purchase, you'll receive a download link and license key by email. Download the software from the official Microsoft website, enter your key during installation or in the activation menu, and follow the guided setup. Full instructions are included with your purchase.
Is Microsoft Office 365 E3 12 months compatible with my operating system?
Microsoft Office 365 E3 12 months is compatible with current versions of Windows and macOS. Please check the system requirements section on this page before purchasing. Most modern PCs and Macs meet or exceed the minimum requirements.
How quickly will I receive my license key from Lizensa?
Your license key is delivered instantly via email after payment is confirmed — typically within 30 seconds. You'll also find it in your Lizensa account dashboard under My Library.
Are Lizensa license keys genuine and legal in the EU?
Yes. Our licenses are sourced through European distribution channels and come with a VAT invoice. The EU Court of Justice (UsedSoft v Oracle, C-128/11) has confirmed that software license resale is legal within the European Economic Area.
What is Lizensa's refund policy?
We offer a 14-day money-back guarantee on all licenses. If you encounter any issues with activation or the product doesn't meet your needs, contact our support team for a full refund — no questions asked.
productDetail.faq.activation.question
After purchase, you'll receive an email with your license key and step-by-step activation instructions. Simply enter the key during installation or in your system's activation settings. Most activations take under 2 minutes.
Do I get support with my Lizensa purchase?
Absolutely. Our multilingual support team responds within one hour during business hours. We can assist with installation, activation troubleshooting, and license questions via email in English, German, French, Spanish, Italian, Dutch, and Polish.
Is this licence lawfully resold in the EU?
Yes. Sourced through authorized European distribution channels. Every key is genuine and resaleable under EU “exhaustion of rights” (CJEU C-128/11).
How fast does the key arrive?
Average delivery is 43 seconds. We commit to under 60 seconds. If we miss that, you get a free replacement.
Can I get a refund if it doesn’t work for me?
Yes. EU consumer law gives you 14 days to return any unused key — no fees, no questions. Honoured without friction.
Do you provide a VAT invoice for B2B?
Yes. EU-compliant invoice with every order, downloadable from your dashboard. Valid VAT number triggers automatic reverse-charge.
What languages is the activation guide in?
EN, DE, FR, ES, NL, PL, IT, PT — matched automatically to your account locale.
What if I have trouble activating?
Email or chat support replies in your language within an hour during EU business hours. We’ll walk you through it or replace the key.
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Centralised administration and policy management: Manage users, devices, apps, and security policies from a single Microsoft 365 admin centre. Enforce multi-factor authentication, configure mobile device management (MDM), and deploy software remotely, reducing the burden on your IT team.
Azure Information Protection (AIP): Classify, label, and protect documents and emails based on their sensitivity. AIP ensures that even when files are shared externally, the protection travels with the data, preventing unauthorised access.
Professional publishing and database tools: Unlike lower-tier plans, E3 includes Microsoft Publisher for professional desktop publishing and Microsoft Access for creating and managing databases, providing essential tools for departments that handle marketing materials or structured data.
Seamless integration with on-premises Active Directory: Synchronise user accounts and passwords with your existing on-premises Active Directory using Azure AD Connect, enabling single sign-on and a consistent identity across cloud and on-premises resources.
Always up-to-date software: Forget managing version upgrades. Office 365 E3 delivers continuous feature updates and security enhancements, ensuring your organisation always runs the latest, most secure version of the Office suite without additional cost.
What's included with your purchase
Your purchase of Microsoft Office 365 E3 12 months from Lizensa is a complete, ready-to-deploy subscription licence for one user for a full year. Upon completing your order, you will receive a digital delivery email containing a pre-paid licence key and a direct link to the Microsoft 365 admin centre for redemption. This is a genuine, verified annual subscription licence sourced from authorised European distribution channels. You will also receive a detailed activation guide, a full VAT invoice, and access to Lizensa's free multilingual support team. The licence is assigned to a user in your Microsoft 365 tenant and includes all the features described: desktop apps, Exchange Online, Teams, SharePoint, OneDrive, and the full suite of compliance tools. Activation requires an internet connection and a Microsoft 365 admin account. The subscription is valid for 12 months from the date of activation and can be managed, reassigned, or renewed through your admin portal. This is a cloud-based subscription, not a one-time purchase, and it is compatible with Windows and macOS.
Office versions compared — which one should you buy?
Choosing the right Microsoft 365 plan depends on your organisation's size, security needs, and management requirements. Here is how Office 365 E3 compares to other common editions:
Office 365 E3 vs. Microsoft 365 Apps for Business: Apps for Business provides only the desktop Office applications and OneDrive, with no email hosting, Teams calling capabilities, or compliance tools. It suits very small businesses needing only the core apps. E3 adds enterprise email, unlimited archiving, DLP, eDiscovery, and full device management, making it the logical step up for any business with compliance obligations or a need for centralised IT control.
Office 365 E3 vs. Office 365 E5: E5 is the ultimate enterprise plan, building on E3 by adding Power BI Pro analytics, advanced threat protection (Microsoft Defender for Office 365), and PSTN conferencing for Teams. Choose E5 if you require integrated voice capabilities or advanced security analytics. For most organisations, E3 provides the ideal balance of productivity and security without the premium cost of E5.
Office 365 E3 vs. Office Professional 2021 (one-time purchase): A one-time purchase like Office Professional 2021 gives you a fixed version of the desktop apps for a single PC or Mac, with no cloud services, no email, no Teams, and no security updates beyond the mainstream support lifecycle. Office 365 E3 is a subscription that delivers continuous updates, cloud storage, hosted email, and compliance tools. For any business with more than a handful of users, the subscription model offers far greater value, security, and flexibility.
This edition is best for medium to large businesses, regulated industries, and IT-managed environments where advanced security, compliance, and centralised administration are not optional but essential.
System requirements / compatibility
Microsoft Office 365 E3 is a cloud-connected suite designed to run on modern hardware. The desktop applications are compatible with both Windows and macOS, while the web apps and admin centre are accessible from any modern browser.
Operating System: Windows 10, Windows 11, or the three most recent versions of macOS. For the best experience, ensure your operating system is up to date.
Processor and RAM: A minimum of 4 GB RAM is required, though 8 GB is strongly recommended for smooth multitasking, especially when using large Excel datasets or participating in video meetings. Both 32-bit and 64-bit architectures are supported where the product edition allows.
Storage: At least 4 GB of available disk space for the core Office installation.
Internet: An internet connection is required for initial activation, licence validation, and access to cloud services like OneDrive, Teams, and Exchange Online. Once activated, desktop apps can be used offline.
Languages: The product interface is available in English, German, French, Dutch, and Polish, among many other languages.
Important Note: Exact requirements can vary by specific feature and operating system version. We recommend validating your environment against the official Microsoft 365 vendor documentation before activating your product.
Installation and activation
Activating your Microsoft Office 365 E3 subscription is a straightforward process managed through the Microsoft 365 admin centre. After your purchase, you will receive an email from Lizensa within minutes containing your unique licence key and a step-by-step activation guide. You will redeem this key by signing into your Microsoft 365 admin portal, navigating to the "Billing" section, and entering the key to add the subscription to your tenant. Once the licence is added, you assign it to a user, who can then download and install the Office apps from the Office 365 portal. Because this is a subscription licence tied to a user identity, you can reinstall the software on new devices as needed, simply by deactivating the old installation through the portal. If you encounter any difficulties during activation, Lizensa's support team is available to assist you without charge.
Why choose Lizensa for your software licences
When you purchase a critical business subscription like Microsoft Office 365 E3, the provenance of the licence and the reliability of the vendor are paramount. Lizensa has built its reputation on delivering genuine, verified software licences sourced exclusively from authorised European distribution. Every purchase is backed by a full VAT invoice, which is essential for your accounting and, for B2B customers, enables the reverse charge mechanism where applicable. Your transaction is protected by Stripe-secured checkout, supporting SEPA, iDEAL, BLIK, Google Pay, and major credit cards, ensuring a smooth and secure payment experience across the EU. We understand that time is money, which is why our digital delivery system sends your licence key to your inbox typically in under sixty seconds. Should you have any questions, our free multilingual technical support team is on hand to help with installation, activation, or pre-sales advice. As an EU-based company, every sale is covered by European consumer protection law, giving you a 14-day right of withdrawal. Your activation is valid across all 27 EU member states, providing flexibility if your business operates or travels within the Union. With Lizensa, you are not just buying a licence key; you are gaining a trusted partner for your organisation's software needs.
FAQ — frequently asked questions
Is Microsoft Office 365 E3 a subscription or a one-time purchase?
This is a 12-month subscription licence. Your right to use the software and cloud services is active for one year from the date of activation. To continue using the services after the term ends, you must renew the subscription.
How fast do I get my licence key after purchasing?
Your licence key and activation instructions are delivered digitally by email, typically in under sixty seconds after your payment is confirmed. You will also find the key available in your Lizensa customer account.
Is this a genuine and legal Microsoft licence?
Absolutely. Every licence sold by Lizensa is 100% genuine, sourced from authorised European distribution channels, and comes with a full VAT invoice. You can verify the licence's authenticity with Microsoft.
What if I have trouble activating the licence?
Lizensa provides free multilingual technical support. If you encounter any issues during the redemption or activation process, simply contact our support team, and we will guide you through to a successful activation.
Can I reinstall Office on a new computer or transfer the licence to another user?
Yes. Because this is a user-based subscription, you can deactivate the licence on an old device through your Microsoft 365 admin centre and reactivate it on a new one. You can also reassign the licence from one user to another within your organisation as staffing changes.
Does this licence work in my country?
This licence is valid for activation and use across all 27 European Union member states. If your business operates within the EU, you can use this subscription without restriction.
What payment methods are accepted?
Lizensa accepts a wide range of payment methods through our Stripe-secured checkout, including SEPA bank transfer, iDEAL, BLIK, Google Pay, and all major credit and debit cards.
Do you provide a VAT invoice for my purchase?
Yes, a full VAT invoice is provided with every purchase. For B2B customers with a valid EU VAT ID, the reverse charge mechanism can be applied, resulting in a net invoice.
What is your refund policy?
As an EU-based retailer, we offer a 14-day right of withdrawal on all purchases, in accordance with European consumer protection law. Please ensure the licence key has not been activated if you wish to request a refund.
What is the difference between Office 365 E3 and Microsoft 365 Business Premium?
Office 365 E3 is an enterprise plan that includes unlimited email archiving, legal hold, and eDiscovery tools not found in Business Premium. Business Premium, however, includes Microsoft Intune for advanced device management and Microsoft Defender for Office 365, which are absent in E3. E3 is generally preferred by larger organisations needing compliance features, while Business Premium suits small to medium businesses prioritising device security.
Does Office 365 E3 include Windows licensing?
No, Office 365 E3 is a productivity and collaboration suite. It does not include a licence for the Windows operating system. If you need Windows, email, and Office together, you would need to look at a Microsoft 365 E3 plan, which bundles Windows Enterprise.
Can I use these licences with my on-premises Active Directory?
Yes. Office 365 E3 is designed to integrate with on-premises Active Directory via Azure AD Connect. This allows you to synchronise user accounts and passwords, enabling single sign-on and a unified identity management experience.
