Image of how it looks when running the JavaScript that cancel the Power Automate flows.

How to cancel running Power Automate flows with JavaScript


Have you ever accidentally triggered many Power Automate flows or have many flows running at the same time that don’t complete since it’s waiting for another flow to finish? In this post, we take a look at how you can cancel running Power Automate flows with JavaScript. Instead of manually canceling one flow at a time, the JavaScript code performs these steps for you.

Table of contents

  • Prerequisites
  • Setting up an environment
  • Creating a Power Automate flow
  • Start multiple flow runs
  • Run the JavaScript code to cancel the running flows
  • Conclusion


  • Familiar with Power Automate.
  • A Power Automate license or a Dynamics 365 environment or a trial.
  • You have a Power Automate with multiple running flows.
  • Some knowledge about JavaScript and the developer console in the browser.

Setting up an environment

To create a Dynamics 365 CE trial environment you can follow the steps in the post, How to create Microsoft Dynamics 365 Customer Engagement Trial instance?.

Creating a Power Automate flow

To show how to cancel flow runs with JavaScript we need to create a flow to show how it looks. To create a flow that we test upon following the steps below.

Step 1: The first step is to create a new cloud flow. For this example, we create an Instant cloud flow so that we can trigger it manually. In this example, I have a solution called Power Automate Flow where the instant cloud flow is added. To create a new flow proceed with the steps in the image below.

Image of how to create a new Instant cloud flow within a solution.

Step 2: After the proceeding steps are completed, a dialog opens. In the dialog give the flow a name and choose “Manually trigger a flow” and then create. This takes as to the newly created flow. To save the flow an action must be added to be able to save it. We add this in the next step.

Image of the dialog that opens after creating a new instant cloud flow.

Step 3: For demo purposes and the simulation of multiple flows runs, we create a simple flow that only contains a delay action. We can then start this flow multiple times before it finishes.

Image of how to add a delay action in Power Automate

After adding the delay action, configure it to delay for 10 minutes. This gives us plenty of time to test the cancellation of multiple flow runs. Remember to save the flow for it to be created.

Image of how to configure the delay action used in this example.

Step 4: This completes the flow in this example. Next up, we need to start the flow multiple times.

Image of flow containing a delay action used in this example.

Start multiple flow runs

Now that we have created a flow for this example we need to start it multiple times. This can be done by following the following steps.

Step 1: Open the flow without going to edit mode. As shown in the image below.

Image of the flow settings pane.

Step 2: Click on Run in the menu bar and then click Run flow in the side dialog as shown in the image below.

Image of how to start a flow.

Image of a flow that started successfully.

Step 3: Proceed steps 1 and 2 for as many flows as you want to run. As an example see image below.

Image of multiple running flows.

Step 4: Now that we have multiple flows running we can now look at how we can use JavaScript to cancel them without doing it manually one by one.

Run the JavaScript code to cancel the running flows

In this part, we look at how we can use JavaScript to cancel flows that are running without canceling each flow manually. To do this, follow the steps below.

Step 1: Click on All runs, this navigates you to all flow runs view.

Image of the navigation step to get to All runs in Power Automate.

Image of the All runs view in Power Automate.

Step 2: When we are in the All runs view, we need to open the developer console in the browser. The developer console can be opened by clicking F12 (or holding fn and F12) on Windows. Or by right-clicking on the screen and clicking Inspect in the dialog as shown in the image below.

Image of how to open developer console in the browser.

Step 3: In the developer console, navigate to the Console pane. To clear the console window click CTRL + L. The console pane is where we are going to add the JavaScript code that will cancel the running flows. As can be seen in the next step.

Image of the navigation to the console pane in the developer console and how to clear the console.

Step 4: The JavaScript used in this example is inspired by the community post, (link opens in a new tab). The code is the same as in the post, with a tiny modification. Instead of canceling the first row in the list, I changed it to cancel the last flow in the list.

Step 5: To run the script copy the following code. In the code block. Copy the first part and run this first, you will get and an error the first time and the second time it works. Then copy the other part, this will start to cancel the flow that is running. A gif of how it looks like is shown below the script.

// Copy this first and run it in the console
var jq = document.createElement('script');
// ... give time for script to load, then type (or see below for non wait option)

// Then copy this in the console to start the cancelation of the flows.
confirm = function () {return true;};
setInterval(function () {

Step 6: To see how it looks when you are running the script you can see it in the gif below.

A gif of how it looks when running the JavaScript that cancels the Power Automate flows.


This wraps up the post, hope you found it useful. Another possible solution is if you have too many flows to cancel, there is a bit risky solution that works. Where you save a copy of the flow and stop the original and then start the copied flow, and then delete the original flow. This will remove all runs for that flow and the copied flow is the “new” original flow. On the other hand, if there is a fair amount of flow that must be canceled the JavaScript can be an easy solution instead of manually canceling each flow.

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