I had problems with it disconnecting when I first tried the new EZB4 out as well. It turned out to be my power supply to the EZB4. Make sure it has a good power supply and if you need to change the minimum voltage you can do it in the Connections Settings.

I'm using a DC adaptor and likely noisy so I will switch to battery and give that a try. Thanks. I'll report back.

Still can't resolve issue. I switched to battery and moved EZB4 more than 10 feet from router. I set to client mode, added MAC to router with static IP, and all of that works. In fact i can connect to static IP from web browser and even by hitting the button within ARC and it connects fine and i can do diagnostic sounds, etc. However, when i try to connect by hitting connect button within ARC, it connects briefly, dings, and then immediately disconnects.

will2829,

Try disabling your Anti-virus software. That was exactly the behaviour when I was using Avast Antivirus. I switched to AVG and have no problems now.

I was having the exact same problem, a few minutes ago I uninstalled Avast Antivirus and downloaded AVG and now I can connect to my new V4 and it stays connected, that solved my problem quickly :-} So I would check your antivirus program, that could be your problem.

Still having trouble. I uninstalled antivirus (and spybot) and still connecting (hear ding) then disconnecting. Here's the message:

9/13/2014 9:00 AM - Attempting connection on 192.168.1.56:23 9/13/2014 9:00 AM - Comm Err: System.IO.IOException: Unable to read data from the transport connection: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond at System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) --- End of inner exception stack trace --- at System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) at System.IO.Stream.ReadByte() at EZ_B.EZB.(Int32 , Byte[] ) 9/13/2014 9:00 AM - BbytesToExpect: 1 9/13/2014 9:00 AM - U Received: 9/13/2014 9:00 AM - Disconnected 9/13/2014 9:00 AM - Connection Failed: System.Exception: Controller Not Responding at EZ_B.EZB.Connect(String hostname, Int32 baudRate) 9/13/2014 9:00 AM - Disconnected

May I suggest you login into your router ( I presume you are in client mode in EZB) check you client list from drop down menu, identify EZB ip ,open port forwarding and setup EZB ip and port

while you may not be interested in using web login at this stage use link below to test router this will show exact ip and port of EZB

https://synthiam.com/Community/Questions/6227

I find this test invaluable as I can see exactly if EZB is connected and its port .

Sometimes my EZB is located in another room by using this simple test I can see if its actually powered up

Obviously antivirus issues may arise as alerady discussed but at least you now know its a pc issue . Pat

Can you verify that it still freezes when in AP Mode?

AP Mode is the default mode for the EZ-B v4. Press the RESET button on the EZ-B v4 when powered up and connect to it.