[SOLVED] Can't add a node to the cluster with error (Exchange 2010 SP3 DAG Windows Server 2012)

Hi there!

I have a problem which makes me very angry already :)

I have two servers Exchange 2010 SP3 with MB role started on Windows Server 2012. I decided to create a DAG.

I have created the prestaged AD object for the cluster called msc-co-exc-01c, assigned necessary permissions and disabled it. Allowed through the Windows Firewall traffic between nodes and prepared the File Share Witness server.

Then I have tried to add nodes. The first node has been added successfully, but the second node doesn't want to be added :). Now I can add only one node to the DAG. I tried to add different servers first, but only the first one was added.

LOGS on the second nodes: 

Application Log

"Failed to initialize cluster with error 0x80004005." (MSExchangeIS)

Failover Clustering Diagnostic Log

"[VER] Could not read version data from database for node msc-co-exc-04v (id 1)."

CMDLET Error:

Summary: 1 item(s). 0 succeeded, 1 failed.
Elapsed time: 00:06:21


MSC-CO-EXC-02V
Failed

Error:
A database availability group administrative operation failed. Error: The operation failed. CreateCluster errors may result from incorrectly configured static addresses. Error: An error occurred while attempting a cluster operation. Error: Cluster API '"AddClusterNode()
 (MaxPercentage=100) failed with 0x5b4. Error: This operation returned because the timeout period expired"' failed. [Server: msc-co-exc-04v.int.krls.ru]

An Active Manager operation failed. Error An error occurred while attempting a cluster operation. Error: Cluster API '"AddClusterNode() (MaxPercentage=100) failed with 0x5b4. Error: This operation returned because the timeout period expired"' failed..

This operation returned because the timeout period expired
Click here for help... http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.3.174.1&t=exchgf1&e=ms.exch.err.ExC9C315

Warning:
Network name 'msc-co-exc-01c' is not online. Please check that the IP address configuration for the database availability group is correct.

Warning:
The operation wasn't successful because an error was encountered. You may find more details in log file "C:\ExchangeSetupLogs\DagTasks\dagtask_2014-11-17_13-54-56.543_add-databaseavailabiltygroupserver.log".


Exchange Management Shell command attempted:
Add-DatabaseAvailabilityGroupServer -MailboxServer 'MSC-CO-EXC-02V' -Identity 'msc-co-exc-01c'

Elapsed Time: 00:06:21

when Exchange servers ran on the same Hyper-V node, the DAG is working well, but if I move one of VM to another node, It stops working.

I have installed Wireshark and captured trafic of cluster interface. When DAG members on the same HV-node, there is inbound and outbound traffic on the cluster interface, but if I move one of DAG member to another node, in Wireshark I see only outbound traffic on both nodes.

It's confused me, because there is normal connectivity between these DAG members through the main interface.

Please, help me if you can.