By Edy, Tech Expert & Blogger
Many people trust Microsoft 365 for storing important files, emails, and collaborative work. But did you know that Microsoft doesn’t fully back up your data? While Microsoft ensures platform reliability, protecting your data is your responsibility.
This is where Synology’s Active Backup for Microsoft 365 comes in. It’s an entirely free solution that offers a solid alternative to costly services like Veeam, ensuring you have control over your data backups. Let’s dive into why it’s crucial to back up your Office 365 data and how Synology can make that easy.

Why do I need to back up Office 365 data?
Using Microsoft 365 doesn’t mean your data is automatically safe from accidents. Sure, Microsoft provides some data redundancy, but that doesn’t protect you if files are accidentally deleted or maliciously altered.
Picture this: you mistakenly delete a critical document or email. Without a backup, that data might be lost forever. Worse yet, if a ransomware attack hits, your files could be locked down, and Microsoft’s recovery tools may not be enough to save the day.
Synology Active Backup for Microsoft 365 steps in to fill this gap. It allows you to back up your emails, files, and entire SharePoint sites, ensuring you can recover important data whenever needed—with just a few clicks.
What is Synology Active Backup for Microsoft 365?
Synology’s Active Backup for Microsoft 365 is a free application designed to give you full control over your Microsoft 365 data backups. If you’re already using a Synology NAS, you can leverage this tool to back up and restore your data without any additional licensing costs. This makes it a powerful, budget-friendly solution for both individuals and businesses looking to protect their critical information.
Understanding Active Backup for Office 365
So, how does it work? Active Backup for Microsoft 365 integrates seamlessly with your Synology NAS to create and manage backups of your Microsoft 365 environment. It’s designed to be simple, even for non-tech-savvy users. With just a few clicks, you can set up automated backups of your emails, OneDrive files, SharePoint sites, and even Microsoft Teams conversations.
One of the standout features is that it’s all handled from a central dashboard. You don’t need multiple apps or tools—everything is in one place, making backup management straightforward and efficient.
Key Features of Active Backup for Microsoft 365
Active Backup for Microsoft 365 has features that make it an appealing choice, especially since it’s free. Here are some of the key features that stand out:
- Centralized Backup: Manage all your backups—emails, files, or SharePoint sites—from a single, user-friendly dashboard.
- Granular Restore: Need to restore just one email or file? No problem. You can choose precisely what to recover without needing to restore everything.
- Automated Backup: Set it and forget it. Schedule your backups to run automatically to protect you without manual intervention.
- Unlimited Backup Retention: Unlike some paid services that limit the time you can keep backups, Synology offers unlimited retention. This means your data can be stored for as long as you need, providing flexibility ideal for compliance and archiving.
What Data Can Be Backed? – Microsoft Teams
One key question I often hear is whether Microsoft Teams data can be backed up, and the answer is yes. Active Backup for Microsoft 365 goes beyond just emails and files—it also covers Teams conversations, channels, and files shared within Teams.
Why is this important? Teams is increasingly becoming the backbone of collaboration for many businesses, and losing valuable conversations or files shared within it could be disastrous. With Synology Active Backup, you can safeguard this critical communication layer, ensuring that you can restore both individual conversations and shared files should anything go wrong.
Synology Microsoft 365 Backup vs Veeam Microsoft 365
Cost and setup requirements are the biggest factors when comparing Synology Active Backup for Microsoft 365 and Veeam Microsoft 365.
Cost and Requirements
Synology Active Backup for Microsoft 365 is free but requires a Synology NAS. If you already own one, it’s a cost-effective solution. However, if you don’t, purchasing a NAS adds to the overall expense, making it less budget-friendly if you’re starting from scratch.
Veeam, on the other hand, offers a Community Edition that is free for up to 10 users, making it accessible for smaller teams or businesses. However, once you exceed 10 users, you’ll need to pay for licenses for all users, and the cost can scale quickly as your team grows.
Features and Use Case
Both solutions offer excellent features for backing up Microsoft 365 data, including email, SharePoint, OneDrive, and Teams. For most small—to medium-sized setups, Active Backup provides all the essential functionality.
Veeam, however, is more geared toward enterprises that need advanced features like detailed reporting, enhanced security options, and better scalability. If your business requires enterprise-grade solutions or you’re managing a larger IT infrastructure, Veeam’s flexibility and advanced features may be worth the investment.
Which One Should You Choose?
- Active Backup is ideal for small- to medium-sized businesses already invested in Synology hardware looking for a free, straightforward solution.
- Veeam is better suited for businesses needing scalability and advanced features or not investing in additional hardware, especially for teams with up to 10 users using the free community edition.
Step-by-Step Guide to Creating a Microsoft 365 Backup Task
Setting up a Microsoft 365 backup task with Synology Active Backup for Microsoft 365 is straightforward. Let me walk you through the steps:
Step 1: Install Active Backup for Microsoft 365
First, install the Active Backup for Microsoft 365 app on your Synology NAS.
- Log in to your Synology NAS.
- Open the Package Center.
- Search for Active Backup for Microsoft 365 and click Install.
- Once installed, open the application.

Step 2: Connect Your Microsoft 365 Account and Set Up the Certificate
To back up your Microsoft 365 data, you must connect to your Microsoft 365 environment by creating a special certificate with your Azure tenant. The package will do it for you. It’s pretty easy.
- First, I highly recommend creating a dedicated shared folder for your Microsoft 365 data. You need to choose the folder later in the wizard creation process, and if you haven’t, you have to start the process again.
- Open Active Backup for Microsoft 365 on your Synology NAS. Select ‘Tast List’; in my case, I already have a task.

- Click on Create and select ‘Create a backup task.’

- This screen connects to Microsoft 365 and creates a certificate. To do so, you need to determine a certificate password. Please store it in a safe place.

- Next, a browser pop-up opens with the usual Microsoft 365 sign-in screen, and you should sign in with an admin account for the tenant. After, you will see in the pop-up screen the request for application permission, approve it, and another screen appears from Synology to agree the terms.

- The pop-up closes and the wizard continues the creation process with

- Followed by the window ‘Authentication Successful’. Here, you can download the generated certificate, which I recommend. The app will automatically integrate the certificate; you don’t need to apply it later.

Step 3: You need to finish the creation wizard with some configurations

- Choose the ‘Backup Destination’, as I recommended above; creating the shared folder beforehand is best. It’s up to you to enable the Microsoft 365 Portal for your users.
- I recommend enabling the ‘auto discovery service’ so that new users or sites are backed up automatically.

- The next screen is to set the backup and retention policy. I schedule a daily backup for my Microsoft 365 tenant and I would restrict the retention to 30 previous versions.

The last screen in the wizard is the summary, which completes the backup creation process.
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What is the Synology Microsoft 365 Recovery Portal?
The Synology Microsoft 365 Recovery Portal is the central hub to view, manage, and restore your Microsoft 365 backups. It offers a user-friendly interface that allows you to recover individual items like emails, files, or even entire SharePoint sites with just a few clicks. This portal is designed to make data recovery fast and easy, ensuring that you can restore critical information whenever needed.
Accessing the Backup for Microsoft 365 Portal
Accessing the Recovery Portal is simple. Here’s how you can get started:
- Log in to your Synology NAS.
- Open Active Backup for Microsoft 365 Portal.
- A new browser tab will open with the Microsoft 365 Portal

- From here, you can browse through your backups, search for specific files or emails, and initiate the restoration process.

The portal offers granular search options, allowing you to pinpoint precisely what you need—whether it’s a single email or an entire SharePoint site. The screenshot above shows the service icon for the applications. In this example, you see the Outlook emails.
Using the backup point, you can choose the dates. Restoring Synology offers two ways:
- restore to Microsoft 365
- export to another location

This Kb article from Synology gives you further information.
The Synology Microsoft 365 Recovery Portal is designed to give you full control over your backup and recovery processes. Whether you need to restore a single file or monitor the health of your backup tasks, the portal offers a comprehensive and user-friendly interface to ensure the security of your data. It’s accessible by every user or only for admins. You have full control.
Monitoring Backup Status and History
The easiest way to monitor the backup status is to set email notifications. Unfortunately, this feature is somewhat hidden in DSM.
Go to ‘Control Panel,’ Notification, Rules

, click Email, and edit. You will get this screen below. Open ‘Active Backup for Microsoft 365’ and select the notifications you want by email.

I also recommend checking the logs and task details from time to time.
What Are the Benefits of Using Active Backup for Microsoft 365?
Using Active Backup for Microsoft 365 offers several key advantages beyond just backing up your data. Whether you’re a small business or a larger organization, Synology’s free backup solution can help reduce the risk of data loss and ensure a solid disaster recovery plan. Let’s dive into two important benefits.
Reducing the Risk of Data Loss
Microsoft 365 may seem secure because it’s cloud-based, but it doesn’t protect you from accidental deletion, ransomware, or data corruption. With Active Backup for Microsoft 365, you take control of your data protection strategy by ensuring you have full backups of your emails, SharePoint sites, OneDrive files, and Teams conversations.
Having a reliable backup solution reduces the risk of data loss in scenarios such as:
- Accidental Deletion: Users may unintentionally delete files or emails. With Active Backup, you can quickly recover these items without worry.
- Malware or Ransomware: If your Microsoft 365 data is compromised, backups allow you to restore your information quickly, minimizing downtime.
- Retention Policies: Microsoft has limited retention policies, but Synology Active Backup allows you to customize how long your backups are stored, offering more flexibility and long-term protection.
This backup solution ensures that your business-critical data is always safe and recoverable, giving you peace of mind.
Implementing the 3-2-1 Backup Strategy
A solid backup strategy is essential for comprehensive data protection. One of the most recommended methods is the 3-2-1 Backup Strategy, which means:
- 3 copies of your data – one primary and two backups.
- 2 different storage mediums – your Synology NAS and cloud storage.
- 1 offsite backup – to protect against local disasters.
With Synology Active Backup for Microsoft 365, you can easily integrate this strategy into your data protection plan. While your primary data lives in Microsoft 365, you can store a backup on your Synology NAS and even set up an offsite backup location, whether that’s another NAS or cloud service.
This redundancy ensures that you’ll have copies of your Microsoft 365 data stored elsewhere, even if your NAS or local network encounters issues. Implementing the 3-2-1 strategy minimizes the risk of complete data loss and increases your business resilience.
I would love to get some feedback from you. Was this article helpful? Please share your opinion with me in the comment section below. Or, if you prefer a more personal touch, feel free to email me directly at info@edywerder.ch. Your thoughts and insights are always appreciated. Additionally, you can connect with me on Reddit at Navigatetech.
Before you go …
Before you go, if you’re using Synology Active Backup for Microsoft 365 to streamline your cloud data management, you might also be interested in Synology Drive. It’s a powerful tool that allows you to sync, share, and access your files across multiple devices. This could complement your backup strategy by giving you seamless file access and collaboration features. Dive into how it works and see how it fits into your Synology ecosystem here.
Tech Expert & Blogger
Hi, I’m Edy. With over 30 years of experience in the IT industry, I’ve tackled numerous tech challenges.
As a solopreneur, I write articles to fill the gaps I notice in my work and online.
My mission? To provide clear, step-by-step tech guidance and improve the information you find on the web
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