Working offline with OneDrive
The OneDrive app for Windows
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Install the Windows version of the OneDrive sync app.
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Select the Start button, search for OneDrive, and then open it.
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When OneDrive Setup starts, enter your work or school account, and then select Sign in.
Note: If you already had an account signed-in to OneDrive and you want to add another account, select the OneDrive cloud icon in the Windows taskbar notification area, select More > Settings > Account > Add an account, and then sign in.
Important PC Folders (auto backup)
You can backup important computer files on OneDrive like your Desktop, Documents, and Pictures files.
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Open OneDrive settings (select the OneDrive cloud icon in your notification area, and then select the OneDrive Help and Settings icon then Settings.)
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Go to the Sync and back up tab.
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Select Manage Back up.
![Screenshot of the Set up protection of important folders dialog box in OneDrive](https://support.content.office.net/en-us/media/ba2d0566-5e67-43ce-998a-fa1aa6517dbe.png)
Turn on Files On-Demand
OneDrive allows you to save space on your device by making files online only. However, for key files, turn on Files On-Demand to keep files on your hard drive and use offline (it will sync when you are back online).
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Open OneDrive settings (select the OneDrive cloud icon in your notification area, and then select the OneDrive Help and Settings icon then Settings.)
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Go to the Sync and back up tab and expand the Advanced settings.
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Under Files On-Demand, select either Free up disk space or Download all files .
In File Explorer, you can mark a file or folder for offline use or as online-only by right-clicking the item and select Always keep on this device or Free up space.
The OneDrive app for Mac
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Important: If you're using the OneDrive Mac Store app, uninstall it before installing the latest build of the OneDrive desktop app.
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Start OneDrive by pressing cmd+ Space to launch a Spotlight query and type OneDrive. This starts OneDrive Setup.
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Enter your work or school account and then select Sign in.
![Screenshot of the This is Your OneDrive Folder page in Welcome to OneDrive wizard on a Mac](https://support.content.office.net/en-us/media/48d80ca1-0dee-4984-be4d-136364e45182.png)
Important PC Folders (auto backup)
You can backup important computer files on OneDrive like your Desktop, Documents, and Pictures files.
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Click the OneDrive cloud icon up in your Menu bar, click the three dots to open the menu, and select Preferences.
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Go to the Backup tab.
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Select Manage Back up.
![Screenshot of the Set up protection of important folders dialog box in OneDrive](https://support.content.office.net/en-us/media/ba2d0566-5e67-43ce-998a-fa1aa6517dbe.png)
Turn on Files On-Demand
OneDrive allows you to save space on your device by making files online only. However, for key files, turn on Files On-Demand to keep files on your hard drive and use offline (it will sync when you are back online).
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Click the OneDrive cloud icon up in your Menu bar, click the three dots to open the menu, and select Preferences.
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Go to the Preferences tab.
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Under Files On-Demand, select either Download files as you use them or Download all files now.
In Finder, you can mark a file or folder for offline use or as online-only by right-clicking the item and select Always keep on this device or Free up space.
OneDrive help and training
![Business woman in remote office working on laptop](https://support.content.office.net/en-us/media/a241f462-a985-4d3a-b07d-c8350cfe9483.png)