Microsoft makes it easy for current and new Windows 10 PC owners to back up their important files using OneDrive. OneDrive comes pre-installed on Windows 10 and offers up to 5GB of free storage without a subscription. All you need is a Microsoft Account to sync and backup your most important folders.
By default, OneDrive backs up your Desktop, Documents, and Pictures folders on your Windows 10 PC. However, you can select any other folders on your PC to back up using OneDrive. Once you have all the folders you want in OneDrive, you can access them any time using any Windows 10 device or your smartphone.
Setting up OneDrive PC Folder backup
Setting up your OneDrive PC Folder backup can be done easily in just a few steps, here’s what you need to do.
1. Open the OneDrive app on your Windows 10 PC (see below)
2. Right-click inside the OneDrive folder that opens, and left-click on Settings. 
3. Go to the Backup tab and Choose Manage Backup.
4. In the Back up your folders dialog box, verify that the folders you want to back up are selected and choose Start backup.
While you are waiting for the files to be backed up using OneDrive, you can close the dialog box as indicated, your files will be synced while you do other things on your Windows 10 PC. One thing to remember is when you backup your Desktop folder: the files and folders will come with you to any other Windows 10 PC that is also running OneDrive. That is an issue I personally came across when writing this tutorial (see below).
Depending on your needs, it might be a good idea to avoid backing up your desktop folder if you have multiple Windows 10 devices. You might inadvertently end up with a cluttered desktop. If you want to stop or change your OneDrive folder backup settings, you can interrupt OneDrive folder backup while it is still in process.
Stop or Change OneDrive PC Folder backup
If you want to interrupt or start backing up another folder in OneDrive, you need to change your folder settings in OneDrive.
If you want to stop OneDrive from backing up a folder, the files that OneDrive has already backed up will stay in OneDrive. You will need to move the folder from OneDrive to a local folder on your Windows 10 PC.
Any files you add to the local folder will not be backed up by OneDrive. In order to remove the files that were already backed up, you will need to delete the folder from the OneDrive website. The process to stop or change the OneDrive PC Folder backup is similar
In order to stop or change the OneDrive PC Folder backup, follow these steps:
1. Open OneDrive Settings, Right-click the OneDrive icon in the Notification Tray, and select Settings. Alternatively, you can follow Steps 1-3 from Setting up OneDrive PC Folder backup.
2. In Settings, choose Backup > Manage backup
3. To stop backing up a folder, choose the folder you want to stop backing up. In this case, choose the Desktop folder and choose Stop backup.
4. Confirm you want to stop backing up the folder, by choosing Stop backup.
5. OneDrive will confirm that the folder you chose is no longer backed up in OneDrive.Choose Close to confirm your selection.
If you run into issues or error codes, Microsoft has a list of fixes and workarounds available on this website. Additionally, if you encounter OneDrive error codes or issues with OneDrive and Personal Vault, there is an extensive list of error codes for your reference.
