# FATAL Error: Port 5601 is already in use. Another instance of Kibana may be running! **URL:** \ **Category:** Kibana\ **Created:** [June 4, 2021, 12:54pm UTC](https://discuss.elastic.co/t/fatal-error-port-5601-is-already-in-use-another-instance-of-kibana-may-be-running/274981 "2021-06-04T12:54:38Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![guxupeta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/guxupeta/32/89834_2.png) [@guxupeta](https://discuss.elastic.co/u/guxupeta)\ **Post date:** [June 4, 2021, 12:54pm UTC](https://discuss.elastic.co/t/fatal-error-port-5601-is-already-in-use-another-instance-of-kibana-may-be-running/274981/1 "2021-06-04T12:54:38Z")
Hello guys I'm having problems running start kibana every time I try to start give does tap of errors FATAL Error: Port 5601 is already in use. Another instance of Kibana may be running! I'm sending an image ![Screen Shot 2021-06-04 at 13.53.09](https://us1.discourse-cdn.com/elastic/original/3X/c/e/ce5b3699d65187e6873be0560a2b99a5940e658a.png) ---
**Author:** ![flash1293](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/flash1293/32/41227_2.png) [@flash1293](https://discuss.elastic.co/u/flash1293)\ **Post date:** [June 4, 2021, 1:06pm UTC](https://discuss.elastic.co/t/fatal-error-port-5601-is-already-in-use-another-instance-of-kibana-may-be-running/274981/2 "2021-06-04T13:06:11Z")
There's something occupying port 5601 on your machine already. Might be another Kibana instance you started and forgot about, might be another process. It depends on your OS how to check which process it is. Make sure only one process tries to claim port 5601 ---
**Author:** ![guxupeta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/guxupeta/32/89834_2.png) [@guxupeta](https://discuss.elastic.co/u/guxupeta)\ **Post date:** [June 4, 2021, 1:30pm UTC](https://discuss.elastic.co/t/fatal-error-port-5601-is-already-in-use-another-instance-of-kibana-may-be-running/274981/3 "2021-06-04T13:30:49Z")
So how to check if there is another port5601 on my machine, please? I'm struggling for well please can you help thanks ---
**Author:** ![flash1293](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/flash1293/32/41227_2.png) [@flash1293](https://discuss.elastic.co/u/flash1293)\ **Post date:** [June 4, 2021, 4:11pm UTC](https://discuss.elastic.co/t/fatal-error-port-5601-is-already-in-use-another-instance-of-kibana-may-be-running/274981/4 "2021-06-04T16:11:38Z")
Trying searching the web for "_\< my OS \>_ check which process uses port" ---
**Author:** ![guxupeta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/guxupeta/32/89834_2.png) [@guxupeta](https://discuss.elastic.co/u/guxupeta)\ **Post date:** [June 5, 2021, 7:30am UTC](https://discuss.elastic.co/t/fatal-error-port-5601-is-already-in-use-another-instance-of-kibana-may-be-running/274981/5 "2021-06-05T07:30:33Z")
> [@flash1293](#): > > my OS Are sure about this web sorry I didn't find anything with this name I spend all night search for my OS ---
**Author:** ![flash1293](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/flash1293/32/41227_2.png) [@flash1293](https://discuss.elastic.co/u/flash1293)\ **Post date:** [June 7, 2021, 7:40am UTC](https://discuss.elastic.co/t/fatal-error-port-5601-is-already-in-use-another-instance-of-kibana-may-be-running/274981/6 "2021-06-07T07:40:15Z")
I think this was a misunderstanding - I meant "my OS" as a placeholder for the operating system you are trying to run Kibana on (like macos, linux, ...) ---
**Author:** ![guxupeta](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/guxupeta/32/89834_2.png) [@guxupeta](https://discuss.elastic.co/u/guxupeta)\ **Post date:** [June 8, 2021, 11:39am UTC](https://discuss.elastic.co/t/fatal-error-port-5601-is-already-in-use-another-instance-of-kibana-may-be-running/274981/7 "2021-06-08T11:39:16Z")
Sorry i give up is to difficult ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2021, 11:40am UTC](https://discuss.elastic.co/t/fatal-error-port-5601-is-already-in-use-another-instance-of-kibana-may-be-running/274981/8 "2021-07-06T11:40:17Z")
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