If your OneDrive folder is taking up too much PC storage, check Free up space before deleting files. This changes downloaded files to online-only files. By contrast, deleting a file in File Explorer also removes it from OneDrive and other synced devices. The two actions have different results.
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This guide covers a OneDrive sync folder on Windows 11. It explains how to free space on your PC, not how to reduce the amount stored in your OneDrive account.
Free up space or delete: what stays?
A filename in File Explorer does not necessarily mean the full file is stored on your PC. OneDrive Files On-Demand lets you download a file when you open it. Looking at both its storage status and the action you plan to take makes the choice clearer.
| Status or action | What is stored on the PC | Offline access |
|---|---|---|
| Online-only | A listing, without the full downloaded file | An internet connection is needed to open it |
| Locally available | A file downloaded after you opened it | Available while the downloaded file remains |
| Always keep on this device | A file designated to stay on the PC | Available offline |
| Free up space | Changes a local file to online-only | It must be downloaded again |
| Delete | Removes the synced file itself | Deletion also reaches other synced devices |
For example, older reference material used only at home could stay online-only, while documents needed on a trip could use Always keep on this device. The useful question is whether you need the file without internet access, rather than how recently you read it. Microsoft’s Files On-Demand guide explains these differences.
Check the originals and sync status first
Confirm that the folder you are cleaning is actually a OneDrive sync folder. A similarly named ordinary folder does not behave the same way. Then check that the files you need appear on OneDrive on the web and that syncing has finished on your PC.
Turning on cloud storage does not prove that every upload has completed. Leave files alone if you are unsure whether they have uploaded. For important material you want to retain, keep a separate copy outside the synced folder as well.
Next, separate files you can download again from those you need to open immediately while away. Travel documents or work you need on the move belong in the second group. If you will need offline access, check that their downloads have finished before leaving.
Free space on the PC without deleting the files
- Open your OneDrive folder in File Explorer.
- Select files or folders that can become online-only.
- Right-click and choose Free up space.
- Separately select material you need offline and choose Always keep on this device.
Names and menu locations can vary slightly with your Windows and OneDrive versions. If Free up space is missing, check the file’s OneDrive status. Do not substitute a delete command.
An already online-only file does not have its full contents stored locally, so repeating the action will not free additional space for that file. Opening an online-only file later downloads it again. Free up space does not permanently prevent files from returning to the PC.
Read each Storage Sense cleanup rule
For automatic cleanup, open Start → Settings → System → Storage and review Storage Sense. Check the schedule and the individual rules for the Recycle Bin, Downloads folder, and cloud content.
Rules that remove items from the Recycle Bin or Downloads folder differ from rules that make cloud files online-only. Making an unused OneDrive file online-only does not delete its cloud original. Files marked Always keep on this device are excluded from this cloud-content management.
Do not copy a default number of days from an online tutorial without checking your own settings. Windows versions and configurations can differ. Use the folders and time periods displayed on your screen as the basis for your decision. See Microsoft’s Storage Sense guidance for the feature’s behavior.
If you deleted something, check the Recycle Bin
If you chose Delete instead of Free up space, check the OneDrive Recycle Bin on the web. Microsoft generally provides up to 30 days for personal accounts and up to 93 days for work or school accounts to recover deleted items. These periods do not guarantee recovery if you emptied the Recycle Bin or a different policy applies.
Before your next cleanup, decide what you want to achieve. To remove a local download while retaining the material, use Free up space. To stop keeping the file itself, consider deletion. If you still want the material, deletion should not be your first step toward freeing PC storage.
Official sources
- Microsoft: Save disk space with OneDrive Files On-Demand for Windows
- Microsoft: Manage drive space with Storage Sense
Official sources checked on September 18, 2026. Work and school accounts also require checking your organization’s settings and retention policies.