Hi, After a major hardware upgrade, I had to re-installed my operating system (Windows 8.1). I was already using Unreal Engine 4.1 on my previous OS instance and my installation directory was not same as the C drive, therefore the windows re-installation did not remove my downloaded engine files. …

If you have copied the engine to the same folder as it should be expected, then there is a trick you can try which will allow the Launcher to simple verify the installation and not have to download anything unless some files are corrupt or out of date. Here’s a couple links to other posts that have…

Re-installed launcher not recognising downloaded engine

Development Platform & Builds

anonymous_user_ab1ea73f (anonymous_user_ab1ea73f) August 5, 2014, 10:22pm 10

Thanks Swifty it works perfect for me! (I’ll let the links here):

Regards!