How to close the 445 port?

To prevent Eternal Blue *** extortion virus, many users are turned off by the system software and the 445 port, port 445 is closed but may affect some system functions, then how to open 445 port it? 445 the following details on open ports methods tutorial.
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open method tutorials 445 port (Win7 / 10 system applicable):
1, Win7 system, click [start - run, type regedit to open the registry] editor (Win10 while holding down [WIN + R] to open the menu, choose run)

2, open the directory [HKEY_LOCAL_MACHINE \ System \ CurrentControlSet \ Services \ NetBT \ Parameters ]

3, such as a closed port 445 can be seen [this] SMBDeviceEnabled item of type REG_DWORD

4, right-click on the project modifications, to modify the value [1] (if not add a DWORD key in the Parameters directory - name: SMBDeviceEnabled type: REG_DWORD value: 1)

restart the run --cmd- - enter the netstat -an, you can see open 445 ports.

5, view 445 port, if the display "Listening" shown in an open state.

Well, that's a detailed tutorial on how to open port 445, the port has been closed 445 users now want to switch on quickly and see it, to avoid problems earlier number of system functions can not be used!