There is an instance of anaconda navigator already running error

Question

Previously my anaconda navigator was not responding so I have rebooted my computer and now when I am trying to open anaconda navigator it pop-ups an error with \"there is an ins

Answer 1

Here is the step you can use to solve this issue quickly.

1. Open Task Manager or use shortcut key Ctrl+Shift+Esc.
2. Find Python process in the list.
3. Kill those processes by clicking on it and click End task.

Then open Anaconda Navigator again.

Answer 2

I met the same problem a few days ago. I found the anaconda navigator will start a process called pythonw. So the following is my solution:

1. open a cmd window;
2. use command tasklist | findstr "pythonw" to find the pid of pythonw, like 37200;
3. use command tskill 37200 to kill the process.

By the way, my OS is Windows.

Answer 3

We can use either of below options to resolve the issue.

1. tasklist | findstr "pythonw"
   tskill <pid>
2. Also we can End the task names 'Python' from Task Manager.

Now open the Anaconda Navigator again. It may take a while to open.

Answer 4

I got the same problem on windows 10, and all the previous answers and commands to taskkill didn't work and gave me the error "Access denied".

I found out that when you turn off your computer in windows 10, by default it doesn't really turn off but instead it hibernates, so it doesn't really "kill" all the tasks running.

Therefore my solution:

1. Go to Windows Start Menu, select _Settings > System > Power & sleep > Additional power settings > Chose what the power button does.
2. Under Power button settings, tap the setting bar, choose the option "Shut down".
3. Click on "Change settings that are currently unavailable", and uncheck the "Turn on fast startup" box.
4. Click on save changes.
5. Now Restart your computer.

This will successfully kill all running tasks, including pythonw, and hopefully solve your problem.

Answer 5

I got the same error in MAC. logoff & login did not resolve the issue and the below command solved my issue in mac. Restart not required.

killall python

Answer 6

1.In ubuntu terminal

 $ anaconda-navigator --reset
 $ anaconda-navigator