So I’m building the engine from the source code and I’ve never had this issue before. I can’t open multiple instances of the editor; trying to do so gives me these link errors in Visual Studio:
LINK : fatal error LNK1104: cannot open file 'C:\Users\Filepath\UnrealEngine\Engine\Binaries\Win64\UE4Editor-Voice.dll'
LINK : fatal error LNK1104: cannot open file 'C:\Users\Filepath\UnrealEngine\Engine\Plugins\Online\OnlineSubsystemUtils\Binaries\Win64\UE4Editor-OnlineSubsystemUtils.dll'
So what changed between the working build and now? I actually did a few things:
- Started using FASTBuild to decrease build times
- Disabled a few built-in engine plugins to decrease build times and reduce disk size
But I never touched anything related to these dlls as far as I know. I removed FASTBuild and rebuilt the normal way and I got the same result. Reenabling the plugins I’d disabled didn’t help either. The .dlls are both there (otherwise I wouldn’t be able to open any editor instances) so I don’t know what could be wrong. Maybe there’s a messed up config file somewhere, but I don’t know what it would be.