To run vRealize Operations Manager cmdlets, you must establish a connection to a vRealize Operations Manager server and a vCenter Server system that is monitored by the vRealize Operations Manager instance.
You can have more than one connection to the same server. For more information, see Managing Default Server Connections.
If your login credentials contain non-alphanumeric characters, you might need to escape them. For more information, see Providing Login Credentials.
If you use a proxy server for the connection, verify that it is configured properly, so that the connection is kept alive long enough for tasks to finish.