How to Backup OneDrive: What Actually Works (and What Doesn’t)

If you’re using OneDrive for your business files, you probably assume everything is safely backed up. That’s a fair assumption. Microsoft markets OneDrive as cloud storage, and “cloud” sounds like it means “safe.”

But OneDrive is a sync service, not a backup solution. There’s a real difference, and it matters when something goes wrong.

This post walks through what OneDrive’s built-in backup actually does, where the gaps are, and the methods that give your business files and folders proper protection.

Not sure if your current backup setup is enough?Talk to our team and we’ll take a look.

OneDrive Sync Is Not a Backup

This is worth understanding, because a lot of businesses get caught out by it.

When you save a file to your OneDrive folder on your computer, it syncs to Microsoft’s cloud servers. Edit the file on your laptop, and those changes show up on your phone and your desktop at work. Delete the file on one device, and it disappears from all of them. That’s how sync works: it mirrors changes everywhere, in both directions.

A true backup is a separate, independent copy of your data. It doesn’t change when the original changes. If you accidentally delete a file, or ransomware encrypts your OneDrive folder, a proper backup gives you a clean copy to restore from.

OneDrive’s sync is great for access and collaboration. But relying on it as your only safety net is risky. If a file gets corrupted or deleted, that corruption or deletion syncs everywhere, across every device tied to your Microsoft 365 account.

What OneDrive’s Built-In Folder Backup Actually Does

OneDrive does have a feature called “PC folder backup” (sometimes called Known Folder Move). On Windows, it can automatically sync your Desktop, Documents, and Pictures folders to OneDrive cloud storage.

Here’s how to set it up:

1. Click the OneDrive cloud icon in your Windows taskbar (it’s the small blue cloud near the clock).
2. Click the gear icon, then select Settings.
3. Go to the Sync and backup tab.
4. Click Manage backup.
5. Toggle on the folders you want backed up (Desktop, Documents, Pictures).
6. Click Save changes.

On a Mac, the steps are similar. Click the OneDrive icon in the menu bar, go to Preferences, then the Backup tab, and select Manage Backup.

Once enabled, files in those folders automatically sync to OneDrive. You can access them from any device where you’re signed in to the same Microsoft 365 account.

The Limitations You Should Know About

• It only covers Desktop, Documents, and Pictures. Any files or folders stored elsewhere on your computer are not included.
• It’s still sync, not true backup. Delete or overwrite something, and that change replicates everywhere.
• Version history is limited. OneDrive keeps file versions for up to 30 days on personal plans and up to 180 days on Microsoft 365 business plans. After that, older versions are gone.
• The Recycle Bin has a 93-day window. Deleted files stay recoverable for about 93 days, then they’re permanently removed.
• Storage is capped. Free accounts get 5 GB. Microsoft 365 business plans typically include 1 TB per user. If you run out, syncing stops.

Three Ways to Properly Backup OneDrive Data

If OneDrive’s built-in tools aren’t a complete backup solution on their own, what is? Here are the methods that actually work.

1. Manual Download to a Local or External Drive

The simplest approach: download your OneDrive files to an external hard drive or another location on your computer. You can do this through the OneDrive web app (select the files and folders you want, click Download) or copy them directly from your local OneDrive folder in Windows Explorer to a separate drive.

This works fine for a small number of files. The problem is that it’s entirely manual. You have to remember to do it, and there’s no versioning or scheduling. For a business with shared folders and multiple users, it doesn’t hold up.

2. Use a Third-Party Backup Solution

This is the approach most IT professionals recommend for businesses. A dedicated cloud backup solution connects directly to your Microsoft 365 environment and creates independent, scheduled backups of your OneDrive data (along with Exchange, SharePoint, and Teams data in most cases).

What a good third-party backup gives you:

• Automated, scheduled backups (daily or more frequent) with no manual effort.
• Point-in-time recovery:. You can restore files, folders, or even entire OneDrive accounts from a specific date.
• Longer retention: Unlike OneDrive’s 30/93-day limits, most backup tools let you keep data for months or years.
• Ransomware protection: Because the backup is stored separately, encrypted files in OneDrive don’t affect your backup copies.
• Compliance support: Many industries (legal, medical, financial) require data retention beyond what OneDrive provides natively.

Popular options in this space include Acronis, Veeam, Datto, and NAKIVO, among others. The right choice depends on your business size, budget, and what other Microsoft 365 data you need protected.

3. Sync OneDrive to a Second Cloud Service

Some businesses choose to sync their OneDrive data to another cloud storage provider (like Google Drive, Dropbox, or a secondary OneDrive account). Tools like MultCloud or other third-party connectors can automate this.

It’s better than nothing, but it has the same core weakness as OneDrive sync itself: if a file is corrupted or deleted at the source, that change may sync to the second cloud too. It adds redundancy, but it doesn’t give you point-in-time restore.

Best Practices for OneDrive Backup

Whatever method you choose, keep these things in mind:

• Follow the 3-2-1 rule: Keep three copies of your data, on two different types of storage, with one copy offsite. OneDrive can be one of those copies, but it shouldn’t be the only one.
• Test your restores: A backup you’ve never tested isn’t a backup. Periodically verify that you can actually recover files from your backup solution.
• Encrypt your backups: If you’re storing data on an external drive or using a third-party cloud backup, make sure encryption is turned on. On Windows, BitLocker can handle local drive encryption.
• Back up shared folders too: If your team uses shared OneDrive or SharePoint folders for collaboration, make sure those are included in your backup plan. Individual user backups won’t cover shared data by default.
• Review your retention settings: Think about how long you actually need to keep backup copies. For some businesses, 30 days is fine. For others (medical practices, law firms, accounting firms), regulatory requirements may demand years of retained data.

FAQ

Does OneDrive automatically backup my files? 

If PC folder backup is enabled, OneDrive syncs your Desktop, Documents, and Pictures folders to the cloud. On newer Windows 11 setups, this may be switched on by default when you sign in with a Microsoft account. But this is sync, not a true independent backup.

Can I backup any folder on my computer to OneDrive? 

Not directly. OneDrive’s built-in backup only supports Desktop, Documents, and Pictures. To back up other folders, you’d need to move them into your OneDrive folder manually, or use a third-party backup tool.

What happens to my files if I cancel my Microsoft 365 subscription? 

Your OneDrive storage drops to the free tier (5 GB). If you’re over that limit, you’ll still be able to view and download your files for a period, but syncing stops and eventually Microsoft may delete data that exceeds the free storage cap. Download anything you need before cancelling.

Is OneDrive safe from ransomware? 

OneDrive has a Files Restore feature that can roll your entire OneDrive back to any point within the last 30 days. That helps with ransomware recovery. But if you don’t catch the attack within 30 days, or if the attack also compromises your Microsoft 365 account credentials, you could still lose data. A separate backup solution with its own authentication is the safest approach.

Do I need a backup if I already have OneDrive for Business? 

Yes. Microsoft’s own shared responsibility model makes it clear: Microsoft is responsible for the availability of the service infrastructure, but you are responsible for protecting your data. That includes backups.

Need Help Setting Up Backup for Your Business?

If you’re a Brisbane or Sunshine Coast business running Microsoft 365, we can help you put the right backup strategy in place for your OneDrive, Exchange, and SharePoint data.

Get in touch with the CRT Network Solutions team.