Firewall is not turned on ora-12541:tns: No listener

The computer uses the sudden Oracle to report the following error, according to the online method for a few hours did not do well.

Oracle re-installed several times also useless, there is no way to spend more than an hour to install a virtual machine, the result is the same error.

Then it dawned on me that the problem of the physical machine might be on the network port.

Later found that Windows did not know when the automatic update, and then the firewall opened .... I shut down two places and restarted the monitor directly.

Ora-12541:tns: No listening program
Ora-12514:tns: Listener currently does not recognize the requested service in the connection descriptor

Firewall is not turned on ora-12541:tns: No listener