The launcher doesn't recognize versions already installed in requested folder

This is regarding version 4.12 and 4.15. I recently did a fresh install of Win 10 64bit but asked it to keep all my personal files. I reinstalled the engine. Then installed 4.12 and 4.15, due to existing content i wanted to work on. I was having problems with file associations for a while. Come home the next day, and the launcher won’t even start up. After a repair attempt that was fixed. My main questions is, the two engine versions i downloaded the night before, are now not being seen. Loading those versions from the exe file loads it up just fine but the launcher asks me to install them. clicking on the down arrows on them gives me “current” option and “remove” option. Can’t verify it. it proceeds to tell me on install directory must be empty but the entire engine is already there. What can I do? Pictures below. Some other posts I’ve looked at we’re similar to mine but the fix didn’t help. Repairing hasn’t helped either. Also my programdata folder doesn’t have manifests in it ;). checked that too. Thanks for the help.

Hey totallysane-

I’m sorry that you are having an issue with the Epic Games Launcher. In order for us to offer the best support, we have recently modified the process for how Epic Games can help troubleshoot your Launcher issue. Please visit http://help.epicgames.com/ for technical support, here you can find information and solutions for common issues, as well as a contact form if you still need additional assistance.

Cheers

Doug Wilson

um ok. doesn’t say what to do. it says move them back to where they originally were. I never moved them.

Based on the steps listed on [this][1] page, it would seem the solution would be to remove the current listed engines and then reinstall them. This should update the launcher with the engine association and allow it to launch the engine versions.
[1]: http://help.epicgames.com/customer/en/portal/articles/2105977-my-system-is-not-detecting-previously-installed-versions-of-the-engine-after-performing-a-fresh-install-of-my-os-

I’m an owner of a internet cafe and I’m having a problem only with Fortnite. All other games, the ones under Steam, Battlenet and other platforms are updating flawless. Although the DeepFreeze is installed on the drive C:\ and the games are installed on the drive D:\ that is not locked, the game asks for updates anytime you restart the computer. It does the update at every restart even though the game was updated before the restart. I think that you are saving some data on the drive C:\ that gets deleted by the DeepFreeze after the restart and the game is unable to recognize the update that is already in the drive D:\ so it starts downloading the whole update from your servers again. Understand my position, I can’t disable the DeepFreeze because it’s a public place and I must protect myself against viruses and malicious things.

I’m an owner of a internet cafe and I’m having a problem with Fortnite. All other games, the ones under Steam, Battlenet and other platforms are updating flawless (means checking the game vault, then downloading the needed files). Although the DeepFreeze is installed on the drive C:\ and the games are installed on the drive D:\ that is not locked, the game asks for updates anytime you restart the computer because it writes data that are saved in the registry of the Windows (it gets deleted by the DeepFreeze). It does the update at every restart even though the game was updated before the restart. The game is unable to recognize the update that is already in the drive D:\ so it starts downloading the whole update from your servers again. Understand my position, I can’t disable the DeepFreeze because it’s a public place and I must protect myself against viruses and malicious things. I cant disable/enable the protection at 50 computers. Best regards.

Seeing as this is an older post and yet the first google result I’ll post here on how I was able to get my new launcher to recognize a pre-existing version of the engine I already had downloaded.

Install the Epic Launcher.
In the default install location, copy your existing version of the engine, however, rename it so that it does not match the typicaly naming convention. In my case, I renamed my existing “4.19” engine directory to “4.19.bkup”

Open the launcher and proceed to download the version of the engine you need. In my case it was 4.19. Once it has started downloading pause the download and close the launcher. Click okay when it prompts you that closing will cancel the download. You should now see the newly created folder and your existing renamed folder.

Delete the newly created engine folder and rename the one you copied back to its original name.

235341-delete-and-rename-existing.png

Close the launcher and continue the download on the engine version. The launcher should skip the download portion and simply install and verify the engine.

Once the verification is done the engine should be ready to launch.

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Thanks a million Scykopath , That did the trick…perfectly!!! no lonnnnng reinstall, thanks again for posting!!

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I also thank you a lot!!! You saved me from the lengthy install which in my case is worse than you think cuz my internet plan is not fast!!

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Thanks very much, you’ve saved me, i’ve changed the location

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NIce! No prob!

Lol as is mine. Happy to help!

Nice, glad to hear. You’re welcome!

Thanks for this solution, Scykopath! Just did this with 4.18.

Workarounds like this really should be stickied or in a FAQ, cause surely there’s more than 5 of us that have bloating hard drives combined with slow and/or expensive internet connections.

Worked, well. In my case, I uninstalled epic launcher, reinstalled then again tried the trick. It worked.

Hi! Great soultion, worked for me with one note. I’ve started download, waited for sometime until there were created some folders inside .egstore folder and launcher started to download Engine folder. After that I’ve paused downloading and closed launcher and I’ve copied Engine, FeaturePacks and other folders except of .egstore folder from my moved full version of engine into the new .egstore/bps/Install folder folder where Launcher started to download new Engine folder. After that I’ve started the launcher and it recognized that engine already downloaded and started to verify it.