FIX: Epic Privacy Browser assertion failed on Windows 10

Vlad Turiceanu
by Vlad Turiceanu
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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 message 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

UR Browser Epic Privacy Browser assertion failed

If you don’t want to go through the hassle of following multiple steps to solve your issue, we recommend that you download UR Browser.

UR is a secure browser focused on user privacy with all the features that you’ll ever need.

Download it now and forget about adds, malware, high RAM and CPU usage or errors.

If you haven’t heard of UR Browser before, check out our review of the browser to learn more about it.

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.

Having problems with registry permissions in Windows 10? Check out this guide!

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 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.