disable-outlook-rules.js

const timeout = 1000;

async function disableRules(params) {
  const ruleDisableButtons = document.querySelectorAll(
    'button[title="Disable rule"]'
  );

  for await (const ruleDisableButton of ruleDisableButtons) {
    ruleDisableButton.click();
    await wait(timeout);
  }
}

function wait(timeout) {
  return new Promise((res) => {
    setTimeout(() => {
      res();
    }, timeout);
  });
}

disableRules();

• Copy the snippet
• Go to the outlook site. I use https://outlook.live.com/
• Go to the Inbox rules page (under settings)
• Open the developer tool
• Paste the snippet on the console and wait :) (Alternatively can use https://developer.chrome.com/docs/devtools/javascript/snippets/)