1.問題
報錯信息：
Running C:/Program Files/Epic Games/UE_4.27/Engine/Binaries/DotNET/UnrealBuildTool.exe -projectfiles -project="E:/1_code/3_UE4/HelloWorld/HelloWorld.uproject" -game -rocket -progress
Discovering modules, targets and source code for project...
ERROR: Could not find NetFxSDK install dir; this will prevent SwarmInterface from installing. Install a version of .NET Framework SDK at 4.6.0 or higher.
2.解決方案
下載安裝.NET Framework 4.7.2 Developer Pack，
下載完成之后雙擊安裝就行，然后重新創建UE4項目就可以了。