After installing and configuring the VMware Plugin on a NetVault client to a vSphere server, the following error can appear when attempting to expand the vSphere node in the backup gui.
Connection to Server has failed. Problem: Couldn't be connected, as the target machine doesn't allow a connection
Similarly, backups selecting the whole vSphere node can error with snapshot timeouts, and error messages similar to:
Failed to open virtual disk
[NFC ERROR] NfcNewAuthdConnectionEx: Failed to connect to peer. Error: Failed to connect to server 172.17.3.3:902
The Server Name, Server IP Address, User name and Password used for configuration are all correct, and the commands `ping` and `nslookup` to and from the NetVault client to the vSphere server are all ok.
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