# Install Button 5.6 does nothing **URL:** \ **Category:** Feedback & Requests\ **Tags:** unreal-engine\ **Created:** [August 26, 2025, 5:01pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168 "2025-08-26T17:01:03Z")\ **Posts on this page:** 17\ **Page:** 1
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 26, 2025, 5:01pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/1 "2025-08-26T17:01:03Z")
As title says, when I click on 5.6.0 install button nothing happens… I have several versions installed and never had issues. Now I finally wanted to test 5.6 but it simply does not install. I deleted epic games launcher cache to no avail, I reinstalled launcher to no avail. I definitely have enough space on disk… ![ue](https://d3kjluh73b9h9o.cloudfront.net/original/4X/6/0/6/606cc620e561592bd548c308ed6881ffd59bd58d.png) ---
**Author:** ![BRGEzedeRocco](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/brgezederocco/32/1216890_2.png) [@BRGEzedeRocco](https://forums.unrealengine.com/u/BRGEzedeRocco)\ **Post date:** [August 26, 2025, 6:33pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/2 "2025-08-26T18:33:05Z")
HI @TOYSTORYLAB , First, try running the Epic Games Launcher as administrator. It’s a bit odd that you still see version 5.6.0, since on my end it already shows 5.6.1, which replaced the previous build with the hotfix ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/8/c/88c2f0bad05dfd9c9873dc428538bc52274eca44.png) > [@5.6.1 Hotfix Released](https://forums.unrealengine.com/t/5-6-1-hotfix-released/2639316): > > Hotfix 5.6.1 is here - check out this latest version with over 270 new fixes and updates! Please feel free to share feedback and discuss the current version in the release topic, [Unreal Engine 5.6 Released](https://forums.unrealengine.com/t/unreal-engine-5-6-released/2538952). If you experience a bug with the 5.6.1 Hotfix, please follow the [How to Report a Bug](https://www.unrealengine.com/support/report-a-bug) guide to report it on the [Bug Submission Form](https://epicsupport.force.com/unrealengine). Future notes to consider: Beginning with UE 5.7, Linux will transition from SDL2 to SDL3. Users with customizations to SDL2 code who are interested in swit… There’s also a thread that talks about this topic. > [@Unreal 5 and Past Versions](https://forums.unrealengine.com/t/unreal-5-and-past-versions/647136): > > I work for a University and Unreal 5 has a fairly major problem, from what I can tell. You can’t download past versions. Imagine your studio/uni has a specific version installed. You are working for months/years and Epic updates to 5.0.4, or 5.1. Your project is on 5.0.3, but you don’t update (common in pipes and studios). Well, if one of your workers/students has a hardware failure and needs a new PC, they are in serious trouble. They can’t get the previous version from Epic. There are, BAD,… I also found a post where people shared several possible solutions to the install button issue ,maybe one of them will help: > [@Install UE button greyed out](https://forums.unrealengine.com/t/install-ue-button-greyed-out/488157): > > Hey, so as the title says, I recently moved to a new computer that I used the engine on without any issues, but now can’t install Unreal Engine at all. The Epic launcher has all installation options greyed out, tried reinstalling, repairing, even doing a fresh windows install since this was the only thing installed on it so far, but nothing works. Some suggested to just wait, but I left it open for a good couple of hours and nothing changed. Hope it helps! ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 26, 2025, 6:47pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/3 "2025-08-26T18:47:27Z")
Thanx for chiming in. I already did run as administrator to no avail. Yeah, odd 5.6.1 does not show up. I am not in studio anymore but will check those links tomorrow. Thanks ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 27, 2025, 11:12am UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/4 "2025-08-27T11:12:50Z")
Unfortunately still not able to install. Install button simply does not react ;-( I assume there are no other ways to install? ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 27, 2025, 3:27pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/5 "2025-08-27T15:27:51Z")
Damned… I uninstalled everything related to Epic/Unreal, tried to remove every trace and reinstalled launcher. Still no UE install possible! This is a disaster for me… I really need help ;-( ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 28, 2025, 12:15pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/6 "2025-08-28T12:15:59Z")
After working over 5 years with Unreal, I can not use it anymore, it simply won’t install. I uninstalled every version I had, every trace of Unreal/Epic, hoping to get a restart. I just upgraded from win 10 to win 11 and it still does not work. Sorry for all caps, but I NEED HELP URGENTLY! Thanx ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 28, 2025, 1:25pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/7 "2025-08-28T13:25:27Z")
[![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/b/6/8b6480d5501f5223e2b6b28175f126bf656863a3.jpeg "Unreal won't install ;-(") ](https://www.youtube.com/watch?v=en1WjYVK398) ---
**Author:** ![BRGEzedeRocco](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/brgezederocco/32/1216890_2.png) [@BRGEzedeRocco](https://forums.unrealengine.com/u/BRGEzedeRocco)\ **Post date:** [August 28, 2025, 2:13pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/8 "2025-08-28T14:13:43Z")
@TOYSTORYLAB , I was reviewing the video and noticed that clicking the Install button triggers a refresh of the Fab Library assets in the background. ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/9/f/8/9f88cf5cef40b3e62e055dae0579d2506439b0ee.jpeg) ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/7/2/a72b6894a5b0d4a14ac809b14ba46c8f94bf6954.jpeg) This indicates that the Launcher is refreshing at that exact moment, which interrupts the install action. Try the following steps: ### Clear the Launcher cache - Close the Epic Games Launcher. - Delete these folders: - …\AppData\Local\EpicGamesLauncher\Saved - …\AppData\Local\UnrealEngine\Common - Reopen the Launcher. ### Unify installation paths - In Downloands Settings , set both the **Default Install Directory** and **VaultCache** to the same drive. - Example: - Try clicking Install again. - Check if the folder `G:\EPIC\UE_5.6` exists. If it does, delete it. - Restart the Launcher and try installing again. ### Verify permissions on external drives (G: and F:) - Right-click the folder: Properties - Security. - Make sure your user account has “Full Control”. I also found this video that may help: - [https://www.youtube.com/watch?v=R9jhY-PgwUw](https://www.youtube.com/watch?v=R9jhY-PgwUw) Let me know if any of these worked for you , if not, we’ll dig deeper and see what else it could be ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 28, 2025, 3:20pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/9 "2025-08-28T15:20:07Z")
Thanx for chiming in again! Unfortunately non of this worked… I noticed though that I as a User (as Administrator I have) did not have “Full Control) over My G/Drive. So I wanted to change that (took a while as it scans through everything on G) and 2 Folders prevented this. I also can not delete them… One is called “Program Files” with a subfolder “ModifiableWindowsApps” This can be opened (Sub is empty) but not deleted. And one called “WindowsApps” I can not open nor delete it… So a general “Full Control” over G for me as a user was not possible. Me as an Admin I have though. I also checked whether I as a User have “Full Control” over a new Folder in G called “EPIC” with 2 subfolders “Engines” and “VaultCache”. I have, both as User and as Admin. I ran launcher as User and as Admin, still no reaction when I click “Install”. I noticed though that in AppData/Local/UnrealEngine a “4.27” folder is created, with sub Saved/Config/Windows/Manifest.ini When I wanted to reproduce this, first nothing happened, though when closing Launcher, and also exit Launcher, a crash Reporter appeared and produced that ominous 4.27 folder… (though I “installed” 5.6) After this I also tried installing 4.27 😉 to na avail… Regarding “noticed that clicking the Install button triggers a refresh of the Fab Library assets”, the video is misleading. I have thousands of assets from Marketplace/Fab, it takes a while to get loaded. When I wait until all are loaded and click install, nothing changes on that matter… ![UE](https://d3kjluh73b9h9o.cloudfront.net/original/4X/8/f/6/8f669e6801c2f2763170a1d970fd77fcd763aa66.png) In case a launcher log is helpful: [EpicGamesLauncher.log](https://forums.unrealengine.com/uploads/short-url/iI29HEHgJK8s76wsuQjqkNF0Uuu.log) (60.6 KB) ---
**Author:** ![BRGEzedeRocco](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/brgezederocco/32/1216890_2.png) [@BRGEzedeRocco](https://forums.unrealengine.com/u/BRGEzedeRocco)\ **Post date:** [August 28, 2025, 4:53pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/10 "2025-08-28T16:53:59Z")
![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/5/a/35ae5070bdf04a18ca244de55841f42a56238741.png) The log shows that the Epic Games Launcher is trying to query the available builds from Epic’s servers, but the request fails with an HTTP 504 Gateway Timeout error. This means the server is not responding in time, so the Launcher interprets that there are no applications associated with your account , which leaves the install button locked. ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/d/1/b/d1bdb5fbdf00d23e944b4ea7762659602745550b.png) I checked several forums and found the following: Some users reported that the issue was fixed by opening the Launcher from the taskbar with right click then Library (as shown in the video I shared above). It is also recommended to temporarily disable antivirus or firewall software, as they may interfere. Others mentioned that the problem solved itself after a while, since it appears to be related to Epic’s servers.( Now it seems that the servers are working correctly, so I don’t think this is the problem.. ) > **[Epic Games Public Status](https://status.epicgames.com/)** > > Welcome to Epic Games Public's home for real-time and historical data on system performance. If none of this works, the best option is to contact Epic Games Support so they can check the issue on their side. [https://eoshelp.epicgames.com/s/unauthorized?language=en\_US](https://eoshelp.epicgames.com/s/unauthorized?language=en_US) ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 28, 2025, 6:21pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/11 "2025-08-28T18:21:00Z")
Thanx again… I am at home now but will check tomorrow your new workaround when in studio. And if this does not work I hope the link you gave will give me access to direct support… Thank you! ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 29, 2025, 10:40am UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/12 "2025-08-29T10:40:54Z")
Still nothing works, disabled firewall/anti virus. The link you provided is not really helpful as it directs to the standard “ **How can we help?”** sites… It seems I (as an indie animator) have no possibility to contact Epic directly ;-/ I spent a little fortune on Marketplace/Fab over the years and now I can not use the software… ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 29, 2025, 10:41am UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/13 "2025-08-29T10:41:02Z")
Any hints on direct support would be helpful…! ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [August 29, 2025, 11:03am UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/14 "2025-08-29T11:03:59Z")
Seems I just was able to contact via Email… ![UE](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/d/7/ad70373e331c8ddc27d1b2756b9d6c2c51841ae6.png) ---
**Author:** ![TOYSTORYLAB](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/toystorylab/32/1194793_2.png) [@TOYSTORYLAB](https://forums.unrealengine.com/u/TOYSTORYLAB)\ **Post date:** [September 2, 2025, 10:42am UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/15 "2025-09-02T10:42:48Z")
Unfortunately still no progress… So I decided to install UE via GitHub Source. Has its cons though: > [@How to strip down Unreal GitHub Source](https://forums.unrealengine.com/t/how-to-strip-down-github-source/2652976): > > Not sure whether this is the correct place to ask, but IMHO it seemed to be the most obvious place. I had/have (as Launcher still does not work) quite an Odyssee the last days… See this thread: [https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168) As Support only gave me standard solutions which I already have done, such as Clear the Epic Games Launcher cache Run the Epic Games Launcher as an administrator Reinstall the Epic Games Launcher … I decided to try to inst… ---
**Author:** ![Megasteakman](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/megasteakman/32/639411_2.png) [@Megasteakman](https://forums.unrealengine.com/u/Megasteakman)\ **Post date:** [June 22, 2026, 7:02pm UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/16 "2026-06-22T19:02:37Z")
I’ve been having consistent problems downloading new versions of UE on my PC, and the only thing that helped me was making a new Epic account that had less FAB assets in my library and logging into that to install the engine. Just was able to install 5.8 today after trying all the troubleshooting half the day. ---
**Author:** ![eims](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@eims](https://forums.unrealengine.com/u/eims)\ **Post date:** [July 27, 2026, 12:18am UTC](https://forums.unrealengine.com/t/install-button-5-6-does-nothing/2651168/17 "2026-07-27T00:18:45Z")
I’m seeing the same issue on macOS. - MacBook Air M2 (2022) - macOS 26.5.2 (25F84) Clicking the Install button does nothing. No download is added to the queue, and enabling debug logging does not provide any useful additional information. The same existing Epic account can download Unreal Engine normally through the Epic Games Launcher on a separate Windows PC. I also tested with a newly created Epic account on the same Mac, and the engine download worked normally. However, that account does not have access to my Fab library, so it is not a practical workaround. The Launcher appeared to be scanning my Fab library after startup. I waited until the activity indicator stopped moving before trying the Install button again, but the result did not change. Quitting the Launcher while that scan is still in progress also causes it to crash. I have already tried signing out and back in, restarting the Launcher, and clearing the Launcher cache. None of these steps resolved the issue.