FIX: Epic Privacy Browser assertion failed on Windows 10/11

Vlad Turiceanu
by Vlad Turiceanu
Passionate about technology, Windows, and everything that has a power button, he spent most of his time developing new skills and learning more about the tech world. Coming from a solid background in PC... Read more
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  • Epic is a free web browser based on Chromium and focused on security and user privacy.
  • adinserter block="33"] If you haven't heard of UR Browser before, check out our review of the browser to learn more about it.
Epic Privacy Browser assertion failed

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Epic is a free web browser based on Chromium and focused on security and user privacy. Its main goal is to create a safe environment and to get rid of all the online tracking. However, many users reported Assertion failed messages in Epic Privacy Browser, and today we’ll show you how to fix it once and for all.

Here’s how one user described this issue on Epic Browser forum:

Team, hoping all is well. I had installed Epic but some days ago I got this pop-up saying:
Assertion (Assert) failed!
Program C:\Users\Cecil\AppData\Local\Epic Privacy Browser\InstallerEpicUpdate.exe\Version:
I prefet to reinstall it. Now, I got the same pop-up. When I click “Ignore”, it continues and finished the installation, but nothing happens.

How can I fix Epic Privacy Browser assertion failed errors?

1. Try a different browser

If you don’t want to go through the hassle of following multiple steps to solve your issue, we recommend you try out the Opera browser.

Opera is a secure browser focused on user privacy with all the functionalities right on your homepage. You have useful privacy offered by a free VPN with enhanced privacy for your online activities.

Moreover, this browser is highly customizable so you can add unique elements or personalize the homepage with integrated apps in your sidebar.

In terms of utility, you have the option to collect web sources easily or split into different workspaces to streamline your tasks at best.

Get Opera

2. Change the Read-only attribute

  1. In the Windows search bar type regedit and click on the first result. It should be Registry Editor.  If you can’t access Registry Editor, be sure to check our guide on how to fix it.registry editor search epic browser assertion problem on windows 10
  2. In Registry Editor navigate to
  3. Right-click on Run and select Permissions… permissions solve epic assertion registry editor
  4. If the Permissions are set to Read, change them to Full Control. full control permissions fix epic on windows 10
  5. Click Apply and then OK.

After this, try to install Epic browser and see if it works. We recommend to proceed with caution: modifying registry keys can lead to system errors, so if you’re unsure, best follow the next steps.

3. Update your Windows 10

  1. Go to Start > Settings. settings start menu epic privacy browser assertion failed
  2. Now click on Update & Security. update and security settings app epic browser assertion failed on windows 10
  3. In the left side-panel, make sure that Windows Update is selected and then in the right section click on Check for updates.check for updates windows update how to fix epic browser assertion issue
  4. If there are any new updates, install them and then check the Epic Privacy Browser.

4. Disable the Firewall

  1. In the Windows search box type Control Panel and hit Enter. control panel solve epic browser problems on windows 10
  2. Select System and Security > then Windows Defender defender firewall control panel fix epic privacy browser assertion problem
  3. In the left side-panel select Turn Windows Defender Firewall on or off.
  4. Now click on the checkmark in front of Turn off Windows Firewall (not recommended). turn off windows defender firewall how to solve epic browser issues on windows 10
  5. Click OK.
  6. Also, be sure to check if the Windows Firewall is blocking a port or program.

That’s it. This should solve the assertion problem with the Epic browser.

If you’re aware of another method to fix the issue or if you have any more questions, share them in the comments section below and we’ll certainly take a look.

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