UE4.26 Cant Launch Game in Editor

From your log:

LINK : fatal error LNK1104: cannot open file ‘C:\Users\link1\Perforce\DesktopWorkspace3\Binaries\Win64\BL00Dexe.exe’

It can’t create that file for some reason. It probably exists already and is locked/readonly/open already?

I have a strong suspicion that your Binaries folder is checked in to perforce. It should not be, because perforce locks files as read-only until you check them out. Make sure the Binaries folder is in your p4’s ignore list.

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