The Fab plugin in Unreal Engine 5.x hasn’t been working for me for over 3 weeks. Sometimes I can try to log in and get an error, other times I get stuck in an infinite loop with the “I’m not a robot” checkbox. No matter what, I can’t access the Fab library, store, or anything else within the plugin in Unreal Engine.
I’ve already tried:
Different PCs
Running everything as admin
Different browsers + deleting cookies
Deleting all Epic/Unreal/Fab cache data
Reinstalling the FAB Plugin + deleting Project-cache data + restarting the PC pre Reinstall
Reinstalling the Epic Games Launcher and Unreal Engine (including deleting all leftover data)
Disabling the firewall
Also, the Fab support ticket system seems to be down?
Is anyone else experiencing this? Any solutions? I’d really appreciate any help since I can’t reach Fab support.
@SupportiveEntity , could you please move this thread to the Issues & Bug Reporting section?
Hey there @Berg1451! Welcome to the community! Should be where you need it now. There are some reported issues with the Fab site backend and the plugin backend itself that are still being investigated at the moment. The support site is also affected, and I’ve let the team know.
In the meantime, is it only the plugin that you cannot access any of the assets or is the web library also having an issue? This is the first I’ve seen the connection with the Captcha failing, though there are various reports along the way up to it having similar issues.
It’s only the plugin — the website works fine.
But downloading every single asset manually and rebuilding the material instances myself is a lot more work. Also, depending on the asset creator, the results can vary compared to using the Fab plugin import — at least in my experience.
Most of the time, when I open the Fab feature in the UE content browser, I have to log in through a browser window to confirm my Fab/Epic account. That process usually fails and gives me an error message. Then, I get a pop-up offering to reload the plugin — which most of the time leads straight into the infinite captcha loop.
At first, I thought it was an invalid web token or some local cache issue on my side. But I’ve tried everything, and I still can’t explain why this is only happening to some users for weeks now.
Also, I already saw forum posts about this infinite captcha loop at the end of last year — even back then, it seemed to affect Fab plugin users specifically. No solution back than.
You had already done most of the standard troubleshooting I’d usually recommend when running into a similar issue. Since the Fab plugin browser utilizes the WebBrowser component in engine, the data for that module isn’t expressly shown in the engine output log (though not sure how much it logs yet since it’s a web container) so I’ll have to do a bit of digging to see how to get those.
I’m going to try and compile more information on this and see if I can submit an updated report.
Thanks for digging into it — I looked as well and couldn’t find any logs related to my FAB captcha problem either.
At this point, I’m convinced the issue isn’t on my end, but rather something server-side — likely in the auth flow for !!!new!!!<—
^^^^^^^^^^connections through the Fab plugin in Unreal Engine, or some related interface.
I’d recommend escalating this to the Epic Games devs or the Fab team — whoever’s currently responsible for maintaining the Fab plugin in UE.
That’s actually a fantastic insight, looking back it does seem that this issue is only affecting new/er users. That also gives me a vector for reproduction.
Facing this issue here as well, any new project started asks me to login when launching Fab and I get stuck in the infinite Cloudflare captcha loop. (I’m on MacOS M1 Sonoma)
@valentinprgnd The FAB plugin has been buggy for a long time. Depending on the directory where your game project is located, the plugin can bug out and stop working. Try creating your project in the default Unreal project folder. If that doesn’t work either, your only option might be to use the FAB plugin in one of Unreal Engine’s template projects and migrate content in ur real project — that worked in my case.
I did extensive testing and checked the logs for many many hours. The plugin seems especially buggy for new users who don’t use the default project path. Unfortunately, Epic Games doesn’t seem to consider the FAB plugin important for the developer experience and probably won’t fix this long-standing issue. Every period of time people like u and me come to the Forum with this Issue.
