'Error starting "XAMPP" stack another instance seems to be running at PID 455

Hi so nothing new has happened on my Mac except maybe an update earlier today and now XAMPP won't start. It comes up with the error "another instance seems to be running at PID 455." I have no idea what this means or how to fix it.

PLEASE HELP

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xampplocalhost


Solution 1:[1]

See Activity Monitor Screen

Open Activity Monitor

Sort by PID

Find the ID of the process to kill, in your case 455

Select the process, click on the X button on the top left of the Activity Monitor window

Solution 2:[2]

There are many reasons to get the above issue you can simply resolve it by removing the stackman folder in your MAC

steps to resolve :: open your terminal in root folder hit the below command 

rm -rf .bitnami/stackman/

all the files will be removed, you can close the xampp and open it, it prompts you as first time installation Go ahead..,

Solution 3:[3]

This is quite old question, but seems many others have unanswered similiar problem.

Kill the PID is not always the solution. When PID is used by a system process, then kill command will be impossible.

Remove the .bitnami/stackman folder also danger solution. It will delete all data inside XAMPP, including htdocs folder. Your PHP scripts will be lost.

Simple solution is to delete file machine.pid in folder:

~/.bitnami/stackman/machines/xampp/tmp

And then start the XAMPP again.

Solution 4:[4]

It tells you it is already running xamp. Try to reboot, if that woldnt work open terminal and type ps aux | grep YOUR_PROCCESS_ID and kill that process with kill command

Solution 5:[5]

Sometimes it's because you have VS Code running the application folder, close VSCode then start xampp then run VSCode

Solution 6:[6]

I received the same error after I deleted XAMPP-VM and then tried to re-install. Simply rebooting fixed the problem.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Rokhayakebe
Solution 2 Srikanth Avadhanula
Solution 3 Aryo Sanjaya
Solution 4 Bogdan Lapchenkov
Solution 5 Tlhologelo Mabitle
Solution 6 Furious Ed

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