I had the same phenomenon, but I solved it in a different way. In my case, I didn't have the capacity, so I left the project setting on drive D. In fact, the 'quick-cell plug-in' was not installed on drive C where the unreal was running. Maybe it's because it's on the D drive. He couldn't read it. £) So I searched for a quick cell in the Unreal Setup > Plug-in > search, and it didn't show up. --------------------------------------------------------------- In this case, click on the Quick Cell Bridge (Quick Cell Icon created on the desktop) and enter > Edit > Export Setting > at the top left. Engine version 4.26 >>> Plug-in location address is >> [C:\Program Files\Epic Games\UE_4.26\Engine\Plugins] I pressed the install button below, and now it appears in the plug-in search.Hahaha I installed a plug-in on drive C, and now it seems to be working fine. Haha For those like me who did well at first, but later went in and the logo disappeared! I recommend you do this, too!