Firefox is one of the top recommended browsers, but it is not without issues. And just like all tech, from time to time, you may be faced with some bugs. This download error is one such bug, and we will explore this issue and give you all the best fixes to help you download your files once again. Let’s get to it!

Why are my downloads failing on Firefox?

While users have complained about failed downloads, there are a few reasons why you may experience this. From our experience, here are the common culprits:

Bad or interrupted internet connections Windows security settings Outdated or corrupt network drivers Permission issues

This is not an exhaustive list, but they are the most rampant reasons your Firefox downloads may fail. However, whatever the reason, the solutions discussed in this article should help resolve the issue. Quick Tip: Perhaps you might use a different browser to download your files until we fix the unknown issue errors in Firefox. Besides, switching to Opera will transfer all your saved data from Firefox. When having errors, the advanced settings in Opera downloads are very configurable and manageable. In circumstances like these, the troubleshooter in Opera download manager can help you.

How can I fix file could not be saved because an unknown error occurred error?

1. Reset the download folder settings via the about:config page

2. Select an alternative download folder

3. Switch off Firefox extensions

You can enable them one after the other while trying to download. That way, you may discover which of the extensions is problematic.

4. Disable Firefox download plug-ins

5. Temporarily disable antivirus software

Third-party antivirus software might be blocking Firefox downloads. So, temporarily disabling antivirus utilities might help fix this issue. SPONSORED These steps work for Avast antivirus but you can temporarily switch most antivirus utilities off by right-clicking their system tray icons and selecting a disable or turn off the option.

6. Reinstall third-party firewalls

In order to have a clean and error-free reinstallation, we recommend you to use dedicated uninstaller software. If you remove your third-party firewall apps using their uninstaller wizards or with the help of the Add or remove programs utility within Windows,  there are high chances that some files will be left behind. Not only will these take up precious memory space, but they may also prevent you from safely reinstalling the firewall. For example, your installation wizard may detect that the app is already on your PC and stop. Uninstaller software can detect and remove all leftover files, so there is not any trace of the app you want to remove. They are easy to use and pretty similar to the Add or remove programs utility. They display a list of all apps on your PC, and you select what you want to uninstall. Wait for the process to end, and then you can download the installer wizard and rerun it. Restart your PC and see if the problem persists.

7. Refresh the Firefox browser to its default settings

When the download cannot be saved because an unknown error occurred, at least one of these fixes should resolve the issue so that you can download software and documents in the Firefox browser again. Additionally, you may consider opening the browser in Safe Mode. This launches your browser with only the basic functionality. Once you do this, the browser can download, even though some other functions may be cut off. We hope that our solutions were helpful to you. However, if you’re having additional Firefox issues on Windows 10 and 11, our guide provides further troubleshooting tips.

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