The most reliable method to fix the ‘Failed to connect to the network backend’ error in Fortnite is explained step-by-step below.
Step 1: You need to come up to the Start menu, and search for a Notepad. Now right click on it, and click on the Run as administrator option.

Step 2: And then click on the Yes option.

Step 3: Now come up to the top left corner, and click on File. Then click on the Open option.

Step 4: Now you have to come up to C:/ drive.

Step 5: Open the Windows folder.

Step 6: Here you need to find out and open the System32.

Step 7: Scroll down, and open the drivers folder.

Step 8: Then after it, you will need to double-click on the etc.

Step 9: At the bottom of the right hand corner, you need to choose the All files option.

Step 10: Select the hosts file, and click on the Open option.

Step 11: You have to delete all the text from here.

Step 12: Click on File at the top left corner and then click on the Save option. This will resolve the error.
But if you are still facing a problem, then you either restart your PC or install the game again.
