SU-MD-HSH: Failed to asynchronously deserialize a manifest

The Epic Games Launcher was not able to get the data expected when trying to self-update. In most cases, this issue will fix itself by waiting a few minutes and trying again. If the issue continues longer than 15 minutes, try the following:

Disable background applications

Background applications can interfere with the Epic Games Launcher so disabling these may resolve your issue. For instructions on how to do this you can visit this article here: How do I disable background applications?

Adjust the Engine.ini file

Windows

1. Exit the Epic Games Launcher entirely.
2. Navigate to the following directory: C:\Users\{username}\AppData\Local\EpicGamesLauncher\Saved\Config\Windows\
3. Open the Engine.ini file in a text editor.
   1. If you do not have the Engine.ini file, copy one of the other .ini files in the same location.
   2. Rename the file to Engine.ini.
4. Edit the file to include the following:
   [Launcher]
   ForceNonSslCdn=false
   Note: If the file says true just change it to false. If you don't see the text at all in the file then add it.
5. Save the file.
6. Try launching the Epic Games Launcher.

Mac

1. Exit the Epic Games Launcher entirely.
2. In Finder, open up your Macintosh HD folder. Press Command+Shift+Dot on your keyboard. This will display hidden folders.
3. Navigate to the following directory: /Users/{their user name}/Library/Preferences/Unreal Engine/EpicGamesLauncher/Mac/
4. Open the Engine.ini file in a text editor.
   1. If you do not have the Engine.ini file, copy one of the other .ini files in the same location.
   2. Rename the file to Engine.ini.
5. Edit the file to include the following:
   [Launcher]
   ForceNonSslCdn=false
   Note: If the file says true just change it to false. If you don't see the text at all in the file then add it.
6. Save the file.
7. Try launching the Epic Games Launcher.