![](https://www.vexpertconsultancy.com/wp-content/uploads/2022/12/image-11.png)
During VMware NSX Manager cluster deployment, and after the OVA deployment of the first NSX manager and adding the vCenter server as a compute manager, you may encounter the below error message while trying to provision the 2nd NSX manager from the NSX portal.
Error occured during vmdk transfer. java.net.SocketTimeoutException connect timed out
![](https://www.vexpertconsultancy.com/wp-content/uploads/2023/03/image-9.png)
Normally this occurs when there is a communication issue between the NSX managers and the ESXi hosts where the three NSX managers will be running, more specifically the provisioning service.
![](https://www.vexpertconsultancy.com/wp-content/uploads/2023/03/image-10-1024x123.png)
The solution is to such issue is as per below:
- Click on DELETE DEPLOYMENT to delete the failed NSX manager.
- Make sure TCP traffic on port 443 is allowed between the NSX managers and the ESXi hosts as per the above table before trying to provision the 2nd NSX manager.
- Re-provision the 2nd NSX manager again.
You can check all the other ports required for the NSX solution at https://ports.esp.vmware.com/home/NSX
I hope this post was informative.
Thanks for reading,