Can't install 5.7?

Development Getting Started & Setup
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1

Dear Community,

For the first time, I cannot seem to install a new version of Unreal. When I click the “Install” button in the epic Launcher, nothing happens. I currently have 5.4.4 and 5.6.1 installed.

Any advice would be very much appreciated!

TIA,

Ben

2

Hello there @Ben_Blau!

Testing on my end, the install seems to be working as intended:

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There could be an issue with your Epic Launcher, I would suggest a reinstall. And if the issue persists even after that, then the next step would be a full uninstall/reinstall of all Epic software from your setup:

  • First, uninstall the engine, launcher, any asset packs, etc
  • Next, open the registry directory HKEY_CURRENT_USER\Software\Epic Games\Unreal Engine\Builds, and delete any build entries
  • Finally, delete the folders %userprofile%\AppData\Local\UnrealEngine and %userprofile%\AppData\Local\UnrealHeaderTool
  • After that, no elements related to UE should be left in your system
  • Now, reinstall UE launcher from scratch, and only add the latest version of the engine (in this case, 5.7, you can add older versions after)
  • After the process is complete, test opening a blank project in 5.7
3

Same problem here. Remove everything and reinstall EpicGamesLauncher has no effects.

Any version of UnrealEngine, it add the button, but the Install button has no effects (no error, no install, nothing)

Someone have another idea ?

Edit:
Don’t know if it’s link, but i found this in log :

[2025.11.17-21.03.22:822][403]LogHttp: Warning: HTTP request timed out after 30.00 seconds URL=https://launcher-public-service-prod06.ol.epicgames.com/launcher/api/public/assets/Windows?label=Live&namespace=ue
[2025.11.17-21.03.22:867][404]LogOnline: Warning: OSS: Invalid response. CorrId=UE4-819d9b0048b3a3275b9a99bcab88f032-4609E3B949C858B61AA800A4E5E94AC1-230E3D584894DE67B3EE02B42F0BD5EF code=0 errorcode=ConnectionFailure errormessage=Échec de la connexion au serveur. errorraw=ConnectionFailure
[2025.11.17-21.03.22:867][404]LogOnline: Warning: OSS: QueryEntitledBuilds request failed. Échec de la connexion au serveur.

4

Don’t know if it’s normal too, but after click on Plus button, i just notice that it list only x.x.0 version.

For example : it doesn’t display 5.4.3, but only 5.4. As you can see in screenshot

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5

Sorry if i’m spamming but :

Finally working… with “EpicGames Launcher” v18 (the latest, v19.0.3 not working… on my computers)

1 Like
6

Hi All i found a fix go to the download settings after install failed in Epics Download Manager then disable Automatic Update Recent Tiltles that worked for me in the latest epic game launcher…UE 5.7 then just retry the install.

Screenshot 2025-11-24 004117
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Screenshot 2025-11-24 004003
Screenshot 2025-11-24 0040031089×759 46.1 KB

7

Nope, this doesn’t work. Not working for 2 machines.

8

latest version v19.1.1 still not working. Still same result : nothing happens when click on install. And list only x.x.0 version, no subversion.

Still using Epic Game Launcher v18 for working

Note : I use latest Windows 11 (25H2 build 26200.7309)