Failed to open/create session data

Charles_Bentley · February 23, 2018, 6:55am

I am using VS Ent. 2017, UE 4.18.3, on Win 10. whenever I try to build the solution I get these errors

Failed to open/create session data BuildingEscape C:\Projects\repos\03_BuildingEscape\BuildingEscape\Intermediate\ProjectFiles\EXEC

Failed to produce item: C:\Projects\repos\03_BuildingEscape\BuildingEscape\Binaries\Win64\UE4Editor-BuildingEscape-7503.dll

The command ““C:\Program Files\Epic Games\UE_4.18\Engine\Build\BatchFiles\Build.bat” BuildingEscapeEditor Win64 Development “C:\Projects\repos\03_BuildingEscape\BuildingEscape\BuildingEscape.uproject” -waitmutex” exited with code 5. Please verify that you have sufficient rights to run this command. BuildingEscape C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\VC\VCTargets\Microsoft.MakeFile.Targets

I have completely deleted and recreated the project and still get the same errors.

Daveorin · February 24, 2018, 12:55am

Try Compiling in UE4. Save all in VS first then compile in UE4. It seems to work better for me but i am a newbie.

Charles_Bentley · February 24, 2018, 4:49am

Fixed. Don’t really know what the exact problem was but it was a source control issue.
After hours of trying everything I could think of, my wife comes home from work and casually mentions that she, closed a bunch of programs with task manager and had deleted some random programs/components through control panel in a horribly misguided attempt to make the computer, in her words, “go faster”. So I figured out that she had either disabled or deleted something that had to do with the source control program I was using…so I deleted all my git repos and source tree. Now it compiles just fine and everything works as expected.