Here is my setup:

  • Everything in running on a single machine, under Mac OS X Snow Leopard.
  • I am running Windows 7 in VirtualBox 3.0.10.
  • In the VirtualBox settings, under Display, Remote Display, I checked "Enable server", and kept the default port (3389). Under Network, I use the Bridge Adapter, so the VirtualBox gets an IP using DHCP, just like OS X does.
  • After starting Windows in VirtualBox, I run ipconfig and see that the IP is
  • From the OS X command line, I can successfully ping

With this setup, I would expect to be able to start Remote Desktop and connect to unfortunately it doesn't work and after about 10 seconds Remote Desktop tells me it can't connect to

Any hit of why this wouldn't work?

4 Answers 4


Don't connect to the IP assigned to Windows running inside VirtualBox, but to the host, or simply localhost if connecting from the same machine. This way it works like a charm.

  • 3
    Does this work in case of Bridge network? I tried localhost and, but no luck. But connecting to worked fine (as noted in this official article).
    – Jet
    Jul 12, 2014 at 8:55

I was having the exact same problem until I installed the Extension Pack. Turns out the VRDP extension isn't installed by default even though the docs make it sound like it is.

Reading the log file for the VM showed

00:00:00.230 VRDE: VirtualBox Remote Desktop Extension is not available.


As far as I know, I just re-tested it. Remember also that the account you will connect to must have a password.

You have to enable it also inside Windows 7 as follow (from W7 help) :

How do I allow remote connections on the computer I want to connect to?

If the computer you want to connect to is using Windows 7 Professional, 
Windows 7 Ultimate, or Windows 7 Enterprise, follow these steps:

Click to open System. 

In the left pane, click Remote settings.  If you are prompted for an administrator 
password or confirmation, type the password or provide confirmation. 

In the System Properties dialog box, under Remote Desktop, select one of the 
three options, and then click Select Users. 

If you are an administrator on the computer, your current user account will 
automatically be added to the list of remote users and you can skip the next two steps.

In the Remote Desktop Users dialog box, click Add.

In the Select Users or Groups dialog box, do the following:

To specify the search location, click Locations, and then select the 
location you want to search.

In Enter the object names to select, type the name of the user that you 
want to add, and then click OK. 

The name will be displayed in the list of users in the Remote Desktop 
Users dialog box.
  • Yes, this is one way to do it: let Windows handle the Remote Desktop connections. But with VirtualBox, VirtualBox itself handles the Remote Desktop connections, and this is why you should connect to the IP of the host, not the one of Windows (see my response on this).
    – avernet
    Nov 20, 2009 at 0:43
  • Windows still needs to be configured to accept RDP connections, regardless of where the connection is handled. Nov 20, 2009 at 5:51
  • Thanks, it worked. After doing it on guest OS (added user "Everyone" to that list), I just started Remote Desktop Client on host OS, wrote there "" (not, as stated in VB site), and it worked! (My adapter is Bridge adapter too, ext-pack installed.)
    – Jet
    Jul 12, 2014 at 8:46
  • @avernet When I changed port in VM settings to 5050, I could connect to it using "". So, probably Virtualbox handles connection.
    – Jet
    Jul 12, 2014 at 8:48

Check if windows has firewall enabled, disable it will allow remote connection. With bridged network setting, you have to connect to the IP of guest, not the host.

  • Yes, this did the trick for me. The dialog seeking credentials instantly came up. Thanks!
    – Chethan S.
    Sep 8, 2015 at 11:18

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