Hot Reload problem - LINK : fatal error LNK1104: cannot open file Game-DebugGame.dll

Bionic_Ape · January 15, 2019, 9:08am

Hi,

I can’t hot reload my Project. The error that I get is fatal error LNK1104: cannot open file 'C:\ProjectPath\Binaries\Win64\UE4Editor-MyGame-Win64-DebugGame.dll'.

It’s only happening when I use the solution configuration “DebugGame Editor” It works fine if I use “Development Editor” but if I use that I can’t debug.

I have tried all the solutions I could find regarding this problem:

LINK : fatal error LNK1104: cannot open file - C++ - Unreal Engine Forums (this one just says “close” the editor, which is not a solution)
Cannot build project - LINK : fatal error LNK1104: cannot open file - Platform & Builds - Unreal Engine Forums

I tested my setup with other projects and it works fine.

This Is the UnrealBuildTool Log:
link text

I run a test, compiling all the Blueprints with no errors. And removed all the plugins but DungeonArchitect and Apex (which I think are not the problem)

I tried running Visual Studio as admin as well as checking if the file was read only.

No success so far.

Can anybody help me?

Many thanks.

Bionic_Ape · January 15, 2019, 9:33am

It’s funny,

I tested thousands of things but clicking the “Compile” button on the editor, and it works pressing it.

I still can’t Ctrl + Shift + B (or click build) on visual studio. Which I’ve been doing for years.

Is there a reason for this?

Ligvest · August 9, 2021, 12:33pm

Was similar problem.
I solved this with these steps:

In the game project folder remove “Binaries” and “Intermediate” folders
Right click on .uproject file → “Generate visual studio project files”.
Run the project and agree to build.

Philipp.w.p · November 9, 2021, 1:20am

Had the same issue. For me the solution was to close UE which was still open with my project in the background

xari2 · September 21, 2022, 4:48pm

thank you bro…worked for me

GamingAlgen · April 21, 2023, 5:47pm

Thanks, this solved the problem for me.
Have a great day.

Manti · October 29, 2023, 1:04pm

Hi all, I am currently facing the same problem but haven’t been able to find a solution. My program crashed today after which the program wouldn’t start up when I asked to use the last successful build (got stuck on 75%) and I get these errors when I try to build from source:

I haven’t created a repository yet, as that is still very new to me. I tried the steps mentioned (delete “Binaries” and “Intermediate” folders etc.). Any idea what it could be?

Manti · October 29, 2023, 1:59pm

I have solved it! In my case, it was just a corrupt blueprint that had somehow driven Visual Studio crazy. Deleting said blueprint and replacing it with an older version from the “saved” folder did the trick (of course removing the “_AutoSave1” from its name).

VoV4_ik · February 16, 2025, 8:28pm

In my case the reason of this problem was in visual studio configuration. With Development Editor configuration it works correctly.

FrostyJas · February 17, 2025, 6:15am

I saw that playout with a project I had ran into this with as well.