Perform a system check for possible errors

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Click the Start Scan button to detect problems with Windows.

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Click Fix All to correct problems related to proprietary technologies.

Scan the PC with Restoro Repair Tool to find errors that cause security problems and delays. Once the scan is complete, the repair process replaces damaged files with new Windows files and components.

Here you can select Firefox as your default browser. You can then open all web links and associated files with Firefox.

3. resetting and reassigning programs to default settings

  1. Press Windows + I to open the Settings application.
  2. Applications are open.
  3. Select the default application in the left pane.
  4. Scroll down and press the Reset button. Error! Filename not specified.
  5. Assign all major programs and select Firefox from the list of available browsers.

Is the problem still there? Don’t worry, there are still ways to solve the problem. Let’s go back to the settings and reset all programs to their default settings. After that, restart the computer.

Make sure you have the full version of Mozilla Firefox installed. If it is some kind of portable Firefox, it will not create an entry in the registry. This means it cannot be detected by Windows 10.

4. Individual capture of program tasks.

  1. Open the Settings application.
  2. Applications are open.
  3. Select the default application in the left pane.
  4. Click the Select Default Requests by File Type button. Error! Filename not specified.
  5. Replace all Edge/Internet Explorer/Chrome related files with Firefox and confirm the changes.

In addition to global settings for the system’s most commonly used applications (default browser, e-mail client, calendar, etc.), there are also file associations.

You can associate certain programs with certain file extensions so that they are only available with this default program. In this case, you can assign all relevant Firefox extensions.

5. Reinstall Firefox

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Finally, a fresh installation can also be useful. As we have already explained, the system creates registry entries when installing Firefox.

However, if the installation is corrupt or incomplete, Firefox may not be listed as a suitable browser.

So you need to reinstall it and check the “Default Applications” section again after the configuration. We recommend that you install Firefox on an architecture that matches that of your system.

At this point we can end this article. I hope that after following these steps you will be able to set Firefox as your default browser.

If you have a different solution or would like to add or omit something, please let us know in the “Comments” section below.

FAQ: Learn more about Firefox

  • How do I set my default browser permanently in Windows 10?

We recommend that you follow the instructions in our guide on how to set Firefox as your default browser.

  • Is Firefox a stable browser?

Yes, Firefox is generally very reliable, but it is also not uncommon to experience problems. Check out our guide on how to fix Firefox crashes.

  • Why can’t I install Firefox?

This is usually a problem caused by your antivirus solution. Our guide, which contains solutions to Firefox installation problems, is just what you need.

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Still having problems?
Repair them with this tool:

  1. Download this highly rated PC recovery tool from (you can download it from this page).
  2. Click the Start Scanning button to scan for Windows issues that may be causing PC problems.
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Restoro was downloaded by 0 players this month.

Editor’s note: This article was originally published in July 2018 and revised and updated in February 2021 for timeliness, accuracy and completeness.

Frequently asked questions

Can’t Firefox be set to default on Win 10?

Setting Firefox as default browser doesn’t work – What to do …

How do I set my default browser permanently in Windows 10?

Changing the default browser in Windows 10 – Microsoft Support

How do I make Firefox my default browser?

Go to the Windows Start menu and click on the Settings icon. Click on Apps and then select Default apps in the left pane. Scroll down and click on the item under Web browsers. In the dialog box that opens with a list of available browsers, click Firefox.

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