If you often use Mozilla Firefox browser, wouldn’t it be best if it automatically launches when you sign in to your Windows 10 or 11 PC? The good news is that you can! Here’s how you can make it happen.
Windows now allows you to set Firefox browser to launch instantly when you start your computer. Even when you start or restart your PC, Firefox will be among the default apps to open for your convenience.
How to Make Firefox Browser Launch Automatically After Starting and Signing in to Windows Computer
First you need to download, install and run Firefox version 120 and later. You might want to check if there are available software updates on your browser.
Click ‘Yes, open Firefox’ Prompt

There are two ways to set Firefox browser to open upon startup. The first is to simply click the “Yes, open Firefox” button when asked to Open Firefox every time you restart your computer. However, this works if you set the browser as default.
If you want to set Firefox browser as default, look for Default Apps in Windows Search. Find Firefox among the list of apps under the Default Apps window. Then, set it as default. You can pin the browser to your Window taskbar for easier access. Just right-click on the Firefox name at the bottom of your browser and click Pin to taskbar.
Manually Configuring Firefox to Automatically Launch Upon Startup

Now for the second method, you can manually configure the auto-launch. Just click Firefox and navigate to Preferences or Settings. Go to the General tab and check Open Firefox automatically when your computer starts up. If you are prompted with a message to visit Startup Apps, just follow the instructions.
In Closing
That’s it! Automatically launching Firefox browser will help reduce delays during startup and make your work more productive and accessible.