title: Port 8080 required by Tomcat v8.0 Server at localhost is already in use
body: <p>I download tomcat on eclipse and it was working fine. but 1 month later I tryed to run it again and I got an error for some reason</p>
  
  <p><strong>ERROR:</strong>
  Port 8080 required by Tomcat v8.0 Server at localhost is already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s).</p>
  
  <p><strong>What I have tried:</strong></p>
  
  <p>Seem to be tomcat is already running...</p>
  
  <p><strong>#1:</strong> I tried going on <a href="http://localhost:8080/" rel="nofollow noreferrer">http://localhost:8080/</a> but I dont got a welcome screen but I get a login in popup... I didn't have a username or password
  <a href="https://i.stack.imgur.com/Xk4PT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Xk4PT.png" alt="enter image description here"></a></p>
  
  <p><strong>#2:</strong>  I click on startup.bat -> shutdown.bat -> run tomcat in eclipse. but no luck</p>
  
  <p><strong>#3:</strong> I check the 'Task Manager' but didn't see Tomcat.exe running.</p>
  
  <p><strong>#4:</strong> I tried the netstat command and I got the following results. than I use the taskkill... maybe I use the wrong taskkill id. can some one double check it? </p>
  
  <pre><code>C:\Users\dave&gt;netstat -aon
  
  Active Connections
  
    Proto  Local Address          Foreign Address        State           PID
    TCP    0.0.0.0:135            0.0.0.0:0              LISTENING       1320
    TCP    0.0.0.0:445            0.0.0.0:0              LISTENING       4
    TCP    0.0.0.0:1521           0.0.0.0:0              LISTENING       3100
    TCP    0.0.0.0:1522           0.0.0.0:0              LISTENING       4024
    TCP    0.0.0.0:5500           0.0.0.0:0              LISTENING       4024
    TCP    0.0.0.0:8080           0.0.0.0:0              LISTENING       3100
    TCP    0.0.0.0:49664          0.0.0.0:0              LISTENING       1044
    TCP    0.0.0.0:49665          0.0.0.0:0              LISTENING       1676
    TCP    0.0.0.0:49666          0.0.0.0:0              LISTENING       688
    TCP    0.0.0.0:49667          0.0.0.0:0              LISTENING       2380
    TCP    0.0.0.0:49671          0.0.0.0:0              LISTENING       1116
    TCP    0.0.0.0:49687          0.0.0.0:0              LISTENING       1148
    TCP    0.0.0.0:49697          0.0.0.0:0              LISTENING       3220
    TCP    0.0.0.0:49705          0.0.0.0:0              LISTENING       4208
    TCP    127.0.0.1:1522         0.0.0.0:0              LISTENING       4024
    TCP    127.0.0.1:1522         127.0.0.1:49706        ESTABLISHED     4024
    TCP    127.0.0.1:2031         0.0.0.0:0              LISTENING       4040
    TCP    127.0.0.1:5037         0.0.0.0:0              LISTENING       11028
    TCP    127.0.0.1:5354         0.0.0.0:0              LISTENING       2976
    TCP    127.0.0.1:49668        0.0.0.0:0              LISTENING       2868
    TCP    127.0.0.1:49674        0.0.0.0:0              LISTENING       3100
    TCP    127.0.0.1:49706        127.0.0.1:1522         ESTABLISHED     4208
    TCP    192.168.2.10:139       0.0.0.0:0              LISTENING       4
    TCP    192.168.2.10:11316     0.0.0.0:0              LISTENING       6600
    TCP    192.168.2.10:49787     209.10.120.24:80       CLOSE_WAIT      2672
    TCP    192.168.2.10:49917     216.58.219.234:443     ESTABLISHED     9884
    TCP    192.168.2.10:52540     193.85.216.236:80      ESTABLISHED     2672
    TCP    192.168.2.10:52600     65.52.108.205:443      ESTABLISHED     6500
    TCP    192.168.2.10:52619     173.194.66.125:5222    ESTABLISHED     9884
    TCP    192.168.2.10:55224     216.58.219.238:443     ESTABLISHED     8520
    TCP    192.168.2.10:55262     74.125.22.95:443       ESTABLISHED     9884
    TCP    192.168.2.10:55265     74.125.29.91:443       ESTABLISHED     8520
    TCP    192.168.2.10:55266     172.217.4.206:443      ESTABLISHED     8520
    TCP    192.168.2.10:55271     216.58.219.237:443     ESTABLISHED     9884
    TCP    [::]:135               [::]:0                 LISTENING       1320
    TCP    [::]:445               [::]:0                 LISTENING       4
    TCP    [::]:1521              [::]:0                 LISTENING       3100
    TCP    [::]:1522              [::]:0                 LISTENING       4024
    TCP    [::]:5500              [::]:0                 LISTENING       4024
    TCP    [::]:8080              [::]:0                 LISTENING       3100
    TCP    [::]:49664             [::]:0                 LISTENING       1044
    TCP    [::]:49665             [::]:0                 LISTENING       1676
    TCP    [::]:49666             [::]:0                 LISTENING       688
    TCP    [::]:49667             [::]:0                 LISTENING       2380
    TCP    [::]:49671             [::]:0                 LISTENING       1116
    TCP    [::]:49687             [::]:0                 LISTENING       1148
    TCP    [::]:49697             [::]:0                 LISTENING       3220
    TCP    [::]:49705             [::]:0                 LISTENING       4208
    TCP    [::1]:2031             [::]:0                 LISTENING       4040
    TCP    [::1]:49672            [::]:0                 LISTENING       4024
    TCP    [::1]:49955            [::]:0                 LISTENING       1952
    TCP    [fe80::394e:2f21:75ae:9f92%13]:1521  [fe80::394e:2f21:75ae:9f92%13]:49691  ESTABLISHED     3100
    TCP    [fe80::394e:2f21:75ae:9f92%13]:49691  [fe80::394e:2f21:75ae:9f92%13]:1521  ESTABLISHED     3220
    TCP    [fe80::394e:2f21:75ae:9f92%13]:54211  [fe80::394e:2f21:75ae:9f92%13]:54213  ESTABLISHED     3220
    TCP    [fe80::394e:2f21:75ae:9f92%13]:54212  [fe80::394e:2f21:75ae:9f92%13]:54214  ESTABLISHED     3220
    TCP    [fe80::394e:2f21:75ae:9f92%13]:54213  [fe80::394e:2f21:75ae:9f92%13]:54211  ESTABLISHED     3100
    TCP    [fe80::394e:2f21:75ae:9f92%13]:54214  [fe80::394e:2f21:75ae:9f92%13]:54212  ESTABLISHED     3100
    UDP    0.0.0.0:3702           *:*                                    988
    UDP    0.0.0.0:3702           *:*                                    988
    UDP    0.0.0.0:5353           *:*                                    2248
    UDP    0.0.0.0:5355           *:*                                    2248
    UDP    0.0.0.0:49664          *:*                                    2976
    UDP    0.0.0.0:58538          *:*                                    988
    UDP    127.0.0.1:1900         *:*                                    1704
    UDP    127.0.0.1:56478        *:*                                    1704
    UDP    192.168.2.10:137       *:*                                    4
    UDP    192.168.2.10:138       *:*                                    4
    UDP    192.168.2.10:1900      *:*                                    1704
    UDP    192.168.2.10:5353      *:*                                    2976
    UDP    192.168.2.10:11316     *:*                                    6600
    UDP    192.168.2.10:56477     *:*                                    1704
    UDP    [::]:3702              *:*                                    988
    UDP    [::]:3702              *:*                                    988
    UDP    [::]:5353              *:*                                    2248
    UDP    [::]:5355              *:*                                    2248
    UDP    [::]:49665             *:*                                    2976
    UDP    [::]:58539             *:*                                    988
    UDP    [::1]:1900             *:*                                    1704
    UDP    [::1]:56476            *:*                                    1704
    UDP    [fe80::394e:2f21:75ae:9f92%13]:1900  *:*                                    1704
    UDP    [fe80::394e:2f21:75ae:9f92%13]:56475  *:*                                    1704
  
  C:\Users\dave&gt;taskkill /F /PID 3100
  ERROR: The process with PID 3100 could not be terminated.
  Reason: Access is denied.
  </code></pre>