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How to delete binded port in Windows 7 from cmd? I'm developing client server application which running on the port 3434 and also is binded on port 0.0.0.0. When I type in cmd netstat -an, I get this output:

  TCP    0.0.0.0:3434           0.0.0.0:0              LISTENING

I can't get ride of them cause don't know the name of port. This link didn't help me, so can you?

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What, exactly, are you trying to get rid of? You've run a server application to listen on a TCP port, and netstat has told you that you have an application listening on a TCP port. What's the thing that you are trying to delete, precisely? –  JdeBP Jan 19 '12 at 17:40
    
Precisely, delete listening port. –  Ivan Pericic Jan 19 '12 at 18:29
    
Your providing the same three word non-explanation a second time doesn't clarify things. What are you trying to do? What has the computer done? And why do you think that that's in error? –  JdeBP Jan 19 '12 at 18:56
    
Let's say that you want to close telnet server on 23 port, you will close telnet server or type something like: netsh advfirewall firewall delete rule name="telnsrv.exe" port=23 ... OK! Now think that you don't know the name of telent ("telnsrv.exe"), you just know the port on which some crashed program was run (TCP 127.0.0.1 Thiscomputer:0 LISTENING [system]). How that to put those port in function? How to free those port? (that you can run again program on same port) –  Ivan Pericic Jan 19 '12 at 19:13
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1 Answer 1

up vote 2 down vote accepted

TCP Ports cannot be deleted, you must close the program that has bound itself to that port.

To find out what program is bound to a port use netstat -ab

 TCP    127.0.0.1:27015        Thiscomputer:0             LISTENING
 [AppleMobileDeviceService.exe]

See How to find exe listening on port?

Try netstat with -o, it shows PID. and then use tasklist to see PID and process name. task manager also shows PID and process name

   TCP    127.0.0.1:27015        bcs:49177              ESTABLISHED     1588  
   [AppleMobileDeviceService.exe]

Task Manager context menu
Using right-click context menu in Task-Manager

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How to delete this, don't have any .exe: TCP 0.0.0.0:3434 nova:0 LISTENING [System] –  Ivan Pericic Jan 19 '12 at 18:43
    
yes thnx for labor, ... but program has run and it was closed, and now when I'm searching for process or name of program don't see anything ... I will trust restart and than try again ... –  Ivan Pericic Jan 19 '12 at 18:55
    
@IvanPericic: See updated answer (and related Q) –  RedGrittyBrick Jan 19 '12 at 18:58
    
I try to restart but same thing, ... still I can't see the name of program just [System] and when trying to end process on him nothing happen .... Probably because my test application has crashed and port that has binded still stayed open. –  Ivan Pericic Jan 19 '12 at 19:19
    
OK ... just to say I try to restart one more time and restart explorer with: cmd /c taskkill /f /im explorer.exe & start explorer.exe ... and those probably refresh some configuration, and now when put: netstat -an in cmd doesn't see 3434 port anymore... thxn again –  Ivan Pericic Jan 19 '12 at 19:34
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