VMware vSphere Client Issues

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VMware vSphere Client Issues

Unable to contact the specified host
The host is not available, there is a network configuration problem, or the management services on the host are not responding
Failed to connect to peer
Error: Failed to connect to server
The operation failed
Incorrect user credentials
Unable to SSH to the source machine
Please check if a firewall is blocking access to the SSH daemon on the source machine
Failed to clone the volume
Unable to connect
FAILED: The request refers to an unexpected or unknown type
Failed to connect ISO image to remote VM
FAILED: unable to obtain the IP address of the helper virtual machine
ssh: Could not resolve hostname
Name or service not known
vSphere Client could not connect to vCenter Server

If you receive the following errors, that can indicate blocked ports:
•Unable to contact the specified host
•The host is not available, there is a network configuration problem, or the management services on the host are not responding
•Failed to connect to peer
•Error: Failed to connect to server
•The operation failed
•Incorrect user credentials
•Unable to SSH to the source machine
•Please check if a firewall is blocking access to the SSH daemon on the source machine
•Failed to clone the volume
•Unable to connect
•FAILED: The request refers to an unexpected or unknown type
•Failed to connect ISO image to remote VM
•FAILED: unable to obtain the IP address of the helper virtual machine
•ssh: Could not resolve hostname
•Name or service not known

Here are some resolutions:

1. It may need to open these ports: TCP: 445, 139, 9089 and UDP port: 137, 138.
2. Disable firewall.
3. Disable other security party.

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