Hello.
I can’t download Fab plugin for Unreal Engine. I do have UE 5.8 which already has Fab plugin but I also recently downloaded Unreal Engine 5.7 which does not have it by default.
I went to my library inside EGS, found it, clicked on it, selected 5.7 and hit install and nothing happened.
i have the same problem
I installed Unreal Engine 5.8, and the Fab plugin was installed automatically. However, after restarting, it disappeared and I cannot reinstall it. I have tried clearing the cache, as well as completely uninstalling and reinstalling the engine. The exact same thing happened again: Fab disappeared after the reboot and won’t install.
I finally managed to get it working on my end after figuring out why the launcher is completely ghosting the installation. The Epic Games Launcher is hitting a silent write-permission or path-resolution error during the 5.8 update where it downloads the local installation manifest file—making the launcher blindly believe it’s already there—but it completely chokes right before unpacking the actual plugin files into the engine folder. Since I had a working copy of Fab on 5.7, I tried to manually copy the folder over and change the version tag in the .uplugin file, but the editor threw a “Missing Modules” error because the pre-compiled 5.7 binaries conflict with the new 5.8 API. To bypass this entirely, I downgraded Fab to a project-level plugin by pasting it into my project’s Plugins directory, deleted the old Binaries and Intermediate folders to clear the stale files, and then commented out two lines of code that changed in the 5.8 API. Specifically, around line 375 in FabBrowser.cpp, I added forward slashes to comment out WebBrowserWindow->SetParentDockTab(DockTab);, and did the same around line 65 in GenericAssetImporter.cpp for the bCombineStaticMeshes line. After that, I just generated project files, hit build in Visual Studio to let it compile native 5.8 binaries from scratch, and moved the freshly compiled Fab folder back up to my global engine directory at Engine\Plugins\Marketplace\. It works perfectly now across all projects, just make sure you never click “Install to Engine” in the launcher again or its broken installer will wipe your working files.
Ooofff… Thanks for the detailed instructions @Lillchris!
I’m currently running into this issue having recently installed both UE5.8 and 5.7 on a Windows11 machine from a fresh install of Launcher and both installs are missing FAB.
Launcher updated itself this morning (log shows AppSettings: Version: 20.1.4-0+UE5), but still won’t install FAB. Using “Install To Engine” for FAB from the Launcher library takes no action after selecting the engine version.
Will try your solution when I get back from SIGGRAPH if it hasn’t already been fixed by the dev team.
Thanks again.
i have the same problem
same here, can’t install FAB plugin
on launcher I see it in my library FAB plugin, but after press install button, nothing happened
on browser does not find plugin, missing
:(((
I’m having the same problem. I can’t even uninstall the Fab plugin. Has this been reported on the UE bug tracker?
Probably the same as :