[2019] My patch download failed because it needs additional 39.22 GB?

Is this on Steam or the standalone client?
 

Moving thread to Technical Support.

Could you please post a log file so that we know how many patches the Launcher is attempting to download and apply? The file will tell us the current version of your game client.

https://support.lastepochgame.com/article/39-the-games-log-file

 
Depending on how out-dated your current install is, I can’t rule out a reinstall potentially requiring less disk space, due to a quirk of how updates are applied. If you would prefer to install and update the game through Steam, this support article may be helpful;

https://support.lastepochgame.com/article/160-steam-account-linking