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How to Fix: Firefox is not set as the default browser on Windows 10

The text “How to Fix: Firefox is not set as the default browser on Windows 10” is displayed for our perusal here.

It has been reported by a significant number of Firefox users that Windows 10 will not allow them to set Firefox as their default browser. According to the majority of impacted clients, they are only able to set Chrome or another browser as their default, but not Firefox.

Why can’t I set Firefox as my default browser?

We investigated this matter by looking at user reports and the solutions that they provided in order to make the setting permanent. According to the findings of our investigation, the following common factors are responsible for causing this inappropriate behaviour:

Installing Firefox incorrectly can cause Windows to disregard your “set as default” requests if the installation was done incorrectly or was incomplete. In most cases, this happens after deleting a browser hijacker or any other type of adware or malicious software from Mozilla Firefox.
An update to Windows caused Firefox to malfunction—Both Microsoft and Mozilla have acknowledged that a Windows 10 update caused the “set as default” capability of Firefox to malfunction. In this particular instance, reinstalling the browser is all that is required.
This post is going to walk you through a variety of different troubleshooting strategies that you can use to fix this specific issue. In situations quite similar to this one, other people have successfully implemented a variety of different methods.

Check also this related article: Why You Should Use Brave, a New Browser Created by the Co-Founder of Mozilla.
If you want your efforts to have the greatest possible impact, we suggest that you strictly and methodically adhere to the guidelines.

Method 1: Reinstalling Firefox

If the issue was caused by an improper installation of Firefox, the problem can be easily fixed by reinstalling the browser together with all of its components. It would appear that using this method successfully made Firefox the default browser on Windows 10 machines.

To fix the issue that states “can’t select Firefox as default browser,” reinstall the Mozilla Firefox browser:

Simply pressing the Windows key and the letter R will bring up the Run dialogue. To access Programs and Features, type “appwiz.cpl” followed by the Enter key on your keyboard.
To remove Mozilla Firefox from your computer, open the Programs and Features menu, right-click on the browser, and then pick Uninstall from the context menu that appears.
To uninstall Mozilla Firefox, follow the instructions that appear on the screen.
After you have finished uninstalling it, restart your computer.
Follow this URL (here) and click on the Download Now button in order to acquire the executable file for installing Mozilla Firefox at the beginning of your session.
After the installation is complete, you will need to confirm the installation of User Account Control (UAC) and then reinstall Mozilla Firefox by following the instructions displayed on-screen.
When you first run the browser, you will be prompted to select whether or not you would like to make it your default browser. When prompted, make Firefox your default browser instead of Chrome or Safari.
If this way didn’t work, or if the setting didn’t stick when you restarted, you can try the following method instead.

Method 2: Changing the default browser from the Default Apps

Changing the default browser from within the Default Apps option was successful for the majority of customers who were having problems getting Windows 10 to remember Firefox as the default browser.

Using this strategy increases the likelihood that Windows 10 will identify Firefox as the default browser. Changing the default browser may be accomplished quickly and easily via the Default Apps menu:

Simply pressing the Windows key and the letter R will bring up the Run dialogue. Then type “ms-settings:defaultapps” into the search bar to open the Default apps option in the Settings app.
Scroll all the way down until you reach the section devoted to the web browser, then click on the button labelled “default browser,” and finally pick Firefox from the list of options that appears.
You should check to verify if Firefox is still set as the default browser after you have restarted your computer.
If the prior setting does not remain, moving on to the next procedure is the next step.

3: Using the Control Panel menu

You might try using the older Control Panel menu in the event that the two methods described above were unsuccessful in fixing the issue and Firefox is still not recognised as the default browser. A number of customers who were affected by the issue reported that making the adjustment to the default browser through an earlier version of the Control Panel interface made the change permanent.

Using the conventional menu of the Control Panel, the following steps can be taken to alter the default browser:

Simply pressing the Windows key and the letter R will bring up the Run dialogue. The next step is to open the Control Panel by pressing the Enter key after typing “control” or “control.exe.”
In the classic Control Panel, “default programmes” can be located by using the search function located in the upper right corner. After that, choose Default Programs from the list of options.
Use the Default Programs menu to configure your computer’s default applications.
Select Mozilla Firefox from the list of available web browsers by scrolling down to that option.
Restarting your computer will allow you to check and see if the changes have been saved.
For further information, see How to Fix the SSL ERROR NO CYPHER OVERLAP in Firefox.
If you are still having issues, you can attempt the way that is outlined below.

Method 4: Modification of the Defaults by App menu

There is one more thing you can attempt to fix the problem and maintain Firefox as your default browser in the event that you have tried everything else and are still unable to fix it.

People who attempted the majority of the other ways outlined above but were unsuccessful have stated that using the menu item “Choose defaults for this programme” was successful for them.

Here is what you have to do:

Simply pressing the Windows key and the letter R will bring up the Run dialogue. Then enter “ms-settings:defaultapps” to open the Settings app’s Default apps menu.
Scroll down until you reach the bottom of the screen, then select the option to Set defaults by app (located above). Choose your default apps)
In the section titled “Set defaults by app,” scroll down the list until you reach Firefox and then pick it. The Manage option will then allow you to reach the Firefox menu.
Next, ensure that Firefox has the most recent versions of all associated file types and protocols.
You will need to restart your computer once Firefox has support for all file types.
Examine the modification after the next system restart.

Method 5: Command Prompt

When certain conditions are met, using the command prompt has the potential to set Firefox as the default browser. Please proceed in the manner that is explained below.

To launch an application, press the Windows key and the letter R.
Enter “cmd” and hit Enter.
Would you be able to launch it by using the following command?
“C:\Program Files\Mozilla Firefox\uninstall\helper.exe” /SetAsDefaultAppGlobal 4. Examine to see if the issue is still present.

The reason for this is that the Windows 10 > Default Browser menu won’t let you set Firefox as the default browser. I carried out these actions:

User Questions::

Navigate to Settings > System > Default Apps, then scroll to the bottom of the page.
Choose to have the app’s defaults be the default.
Choose Firefox, and then click the Defaults button for this application.
The default version of Firefox on Windows 10?
Control Panel – All Items – Default Programs may be found at Control Panel – Set Default Programs. From the list that appears, select Firefox to make it your default browser. Click the Default application button that is located at the bottom of the window.
Additionally: Add-ons for Firefox Don’t Seem to Be Working
Will Windows 10 replace my current browser with a new one?
Apps can be found in the Settings menu. In the left pane, scroll all the way down until you reach the part labelled web browser. You can make your preferred web browser your default by clicking or tapping on the application that manages your default settings.

How do I make Firefox my default web browser?
To access the preferences for Firefox, navigate to the top menu bar and click Preferences. From the menu, select the OptionsPreferences option.
In the General panel, select the Default option.
Turn off the about:preferences page.
When will Microsoft officially launch Windows 10?
Start by clicking the Start button, then start typing Default apps.
Choose Default apps from the list that appears.
Choose the browser you’re currently using, followed by either Microsoft Edge or another browser.