If you get a new Windows 10 PC, how do you move files from your old computer that's running Windows XP, Windows Vista, or Windows 7? Microsoft has one answer, a software utility called PC Mover Express, which Microsoft (in partnership with LapLink) is offering for free until August 31, 2016.

Ordinarily PC Mover Express costs $30. The utility uses your local network, wired or wireless, to migrate your data over to a new PC, and you don't have to figure it out on your own if you get stuck. The installer gives you a 1-800 number that you can call 24/7 to get instructions on how to use PC Mover Express, also at no cost. You can tell the app to send you an email or a text message when it has completed the transfer.

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There are some limitations. The license for this version of PC Mover Express is for personal use only. If your PC is logged in to a company domain, the app will not start. Also, if you want to move your applications as well as your data, you need to get PC Mover Home instead, which costs $40. Both the Express and Home versions are limited to transferring only from your C: drive. If you need to move multiple user accounts to your new Windows 10 PC, or transfer data from other storage devices, then you'll need PC Mover Professional. Or you can copy data to your C: drive and migrate it from there, if you have enough space.

Tom is the senior editor covering Windows at Download.com.