Increase Dropbox Space for Free (Windows)

This guide teaches you to increase your Dropbox's space via the referral trick under Windows.

The Trick:

This technique use the following facts:

  1. Dropbox allows you to refer your friends via a URL.
  2. When your friend register using that URL, installed Dropbox client and login, you the referrer’s account will get spaced increase (500 MB at the time of writing)
  3. However, if you think you can get space gain by doing Step 2 on the same computer, Dropbox will consider the referral is not eligible.Dropbox Ineligible Referral

We use the following method to bypass Dropbox’s checking

  • We setup a “virtual machine” (virtual PC) on your main PC. A virtual machine acts like an operating system (e.g. Microsoft Windows) running inside an operating system.
  • We use a MAC address changer software to change the network adapter’s address to fool Dropbox that we are not doing the whole thing on the same PC.

Major Steps:

  1. Install VirtualBox
  2. Install the Dropbox virtual machine appliance either by making it by yourself, or download from me.
  3. Create dummy Dropbox accounts and login.

Install VirtualBox

  1. Download the VirtualBox installer for Windows at here.
  2. Install VirtualBox. You may need to click “Yes” several times during installation.
  3. When complete, you can find the item “Oracle VM VirtualBox” in your Start menu.

Install the Dropbox Virtual Machine Appliance

The appliance has a file extension of .ova. Ask me if you want to get one.

Once you have that appliance:

Dropbox VirtualBox Appliance in File Explorer

  1. Double click on the .ova file
  2. Make sure to check the “Reinitialize the MAC address of all network cards” checkbox
  3. Click the “Import” button

Once you succeed, start the virtual machine

How to start a VirtualBox Machine

Increase your Dropbox Account’s Space Using Dummy Dropbox Accounts

  1. Go to and copy your referral link. The link looks like  Copy down that referral link in a place e.g. notepad
  2. Logout Dropbox, and enter the referral link and register a new Dropbox account. This account is used for increasing your main Dropbox account’s space.
    1. The email need not to be valid, but please enter something which looks like a valid email address.
    2. Copy down the dummy Dropbox account’s email and password.
    3. When registered successfully, logout from Dropbox web site.
  3. In your Dropbox virtual machine, open the software “TMAC” (Technitium MAC Address Changer” and “Dropbox”.
  4. In TMAC, click the button “Random MAC Address” on the lower left and then click “Change Now!”. Wait until it shows a dialog “MAC Address was changed successfully”.TMAC Change MAC Address
  5. Now open the Dropbox client in the virtual machine, click “I already have a Dropbox account”Dropbox in Virtual Machine
  6. Enter the dummy Dropbox account login information. Remember to change the “Computer Name” to something different for every dummy account you use!Dropbox in Virtual Machine - Login
  7. Click Next
  8. Look at the Dropbox client in you main computer. You should see a popup notification telling you the Dropbox account space is increased!
  9. To gain more space, repeat from Step 1.

22 thoughts on “Increase Dropbox Space for Free (Windows)

  1. Pingback: How To Create a (Small) Dropbox Windows VirtualBox Image | Cozy Lakeside

  2. The most interesting part of your article was the .ova file that you haven’t uploaded!
    Please email it to me if possible.

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