If for any reason you want iTunes to Backup iPhone to a different location, you can make use of a workaround as provided below to Change iPhone Backup Location in Windows 10.
Change iPhone Backup Location in Windows 10
When you Backup iPhone to computer using iTunes, the Backup of iPhone gets safely stored at a specific location on your computer.
Similarly, when you Restore iPhone from Backup, iTunes automatically locates iPhone Backups stored on the computer, which makes it easy for you to select the required Backup File.
While most users are happy with this setup, some users want to change iPhone Location to Desktop, External Drive or to a known place on their computer.
Going by our experience, it is not recommended to change iPhone Backup Location to an External Storage Drive, as it is known to corrupt backups files and cause problems while restoring iPhone.
Changing iTunes backup location to any other location on the computer should work well, but nothing can be guaranteed (Use at your own risk).
Where is the Location of iPhone Backup in Windows 10?
The default location of iPhone Backup in Windows 10 varies, depending on how iTunes was installed on your computer.
If iTunes was installed from Windows Store, iPhone Backup will be located at C:\Users\UserName\Apple\MobileSync.
If iTunes was installed from outside Windows Store, iPhone Backup will be located at path C:\Users\(username)\AppData\Roaming\Apple Computer\MobileSync.
How to Change iTunes Backup Location in Windows 10
Currently, the only way to change Location of iPhone Backup Folder in Windows 10 is to create a Symbolic link from the current iPhone Backup location to your desired New Backup Location.
Once the Symlink is created, it tricks iTunes into making a backup of iPhone to your desired New Location.
The procedure to change iPhone Backup Location on your computer involves the following three steps.
Step#1. Create MobileSync Folder at New Location
The first step is to navigate to New Location where you want to save iPhone Backups and create a New MobileSync Folder in that location.
1. Right-click on the Start button and click on File Explorer.
2. In File Explorer window, navigate to New Location where you want to save iPhone Backups.
3. Right-click in any Empty space and click on New Folder.
4. Name this New Folder as MobileSync and do not close the File Explorer window.
Step#2. Copy Current iPhone Backup Folder to New MobileSync Folder
The second step is copy the current iPhone Backup Folder to New MobileSync Folder that you created in the first step.
1. Open File Explorer and Navigate to C:\Users\UserName\Apple\MobileSync.
Note: If you are using Desktop version of iTunes, navigate to C:\Users\UserName\AppData\Roaming\Apple Computer\MobileSync.
2. Right-click on the current iPhone Backup Folder and select the Copy option.
3. Go to New MobileSync Folder that you created in the first step and paste the iPhone Backup Folder there.
4. Now, go back to default MobileSync Folder and Rename the Current iPhone Backup Folder as Old Backup.
Step#3. Create Symlink from Current to New MobileSync Folder
The final step is to create a Symbolic link pointing from the default iTunes Backup Folder Location to New iPhone Backup Location.
1. Right-click on the Start button and click on Command Prompt (Admin).
2. In Command Prompt window, type MkLink /J “C:\Users\UserName\Apple\MobileSync\Backup” “C:\MobileSync\Backup”.
Note: If iTunes is installed from outside (not Windows Store), type MkLink /J “C:\Users\UserName\AppData\Roaming\Apple Computer\MobileSync\Backup” “C:\MobileSync\Backup”
If things go properly, you should now see a Symlink created in MobileSync Folder.
Once the Symlink is created, it should force iTunes to Backup iPhone to your selected New Location.