UE5 Breakpoint will not currently be hit.

I've made a test project to try out (named MyProject). Copied 3 plugins I'm having troubles with (copypasted). And it all worked fine. I've compared .uproject and .build.cs files of my initial project (Project_2) and MyProject to find any issues but didn't noticed any (pic 1, 2):

Also in the MyProject, Rider is able to go to the definition of the GameplayAbilities.uplugin by clicking Ctrl+LMB on the .uproject tab. In Project_2 it says "Cannot find declaration to go" (pic 3):

Also, highligthted areas show this (pic 4):

I beleive that is the problem but don't know how to fix that. The question is how to make Rider or UE be able to find and go to the declaration of .uplugin?

Hello Timdogger,

Thank you for contacting Rider support.
Apologies for keeping you so long without an answer.

Would you mind trying the following options?

• Ensure that File | Settings | Languages & Frameworks | C++ | Unreal Engine | Index third-party code, Index plugins are enabled; Then invalidate solution caches via File | Invalidate Caches and restart Rider;
• If you open your game project via .sln file, please try opening it via .uproject file(File | Open | Open | select {gamePath}/{game}.uproject);
• If it doesn't help, I suggest trying the recently released version of Rider 2022.3 as we add a significant number of fixes and performance improvements with each release.

I will be waiting for your response.
Have a nice day!

Same problem, and have tried above options, does not work

Hello Tarnishablec,

We would appreciate it if you could elaborate on the issue you encounter and share additional information as described below:

• Enable the Debuger trace scenario via Help→Diagnostic Tools→Choose Trace Scenarios;
• Reproduce the issue and make a screencast demonstrating that;
• Collect logs via Help→Collect Logs and Diagnostic Data;
• Upload logs archive generated and screencast o the Upload service and let me know the Upload ID;

Have a nice day!

Hello Dmitry,
Upload Id is 2024_04_09_QCysNi6RhY4EEzvfVo3kzw 

Hello,

Apologies for the delay in getting back to you.

Would you mind sharing the following details with us?

• Did you install Unreal Engine through the Epic Games launcher, or did you build it from sources on GitHub?
• In case it is installed via launcher, do you have Editor symbols for debugging installed? If no, try installing them and see if that helps.
  
• Can you debug the same code in Visual Studio?
• Does debugging work in built-in engine sources (not plugins)? (Please try placing a breakpoint somewhere in Actor.cpp)

Thank you in advance and have a nice day!

I Installed UE through launcher and have Editor symbols for debugging installed.
I can debug engine sources and project plugins (plugins in project's /Plugins/ folder)， but can not debug marketplace plugin which is in Engin/UE5/Plugins/Marketplace folder.
I can debug in Visual Studio 2022 without any problem.

Below is same line of code adding breakpoint in Rider & VS

Hello,

Take my sincere apologies for taking so long to respond.

I verified this behavior.

Debugging plugins from marketplace works fine while starting UE editor right from Rider via the Debug button.

However, if you launch UE without debugger attached and then attach debugger via Run | Attach to Process, you might encounter this issue: RIDER-81272 Unable to attach Unreal Editor for debugging.

The issue is not in Rider itself, as it is also affects Visual Studio. The Increase the Number of Modules Loaded When Attaching the Debugger briefly explains why such a problem occurs: Debuggers on Windows are limited to loading the symbols for 500 modules when attaching to a running process. Unreal based projects can have more than that limit depending on the version and the plugin configuration.

If you experience a similar behavior (breakpoints are not being hit after attaching debugger, but works fine if you start Debug right from Rider), try the following steps to see if that helps:

1. Press the Windows key + R to open the Run dialog box.
2. Type “regedit” and press Enter to open the Registry Editor.
3. In the Registry Editor, navigate to “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager”.
4. Right-click on the “Session Manager” key and select New → DWORD (32-bit) Value.
5. Name the new value “DebuggerMaxModuleMsgs”.
6. Double-click on the new value to open the Edit DWORD (32-bit) Value dialog box.
7. In the Value data field, enter the value “2048” and click OK.
8. Close the Registry Editor and restart your computer for the changes to take effect.

If the issue persists even when starting Debug right from Rider or after applying the workaround, please follow the steps below and let me know the results:

• Launch UE editor right from Rider;
• Wait for the editor to open;
• Switch to Rider;
• Open Debug tool window and press "Pause"
  
• Open Debugger Output (LLDB) tab and type image list;
• Save the output in LaunchedFromRider.txt file;
• Resume the execution (button next to Pause);
• End execution via "Stop" button;
• Launch UE via "Run" button;
• Wait for the editor to open;
• Switch to Rider;
• Attach debugger via Run | Attach to Process (find the process UnrealEditor.exe {PathTo}/{game}.uproject);
• Go to Debug->Debugger Output (LLDB) and invoke image list one more time;
• Save the output in "attachedFromRider.txt";
• Verify if in any file you see the needed .dll; 

One more thing you can try is to ensure that the your plugin comes with .pdb file. It should be in {PathToPluginInstallation}/Binaries/Win64. In my case if was: Engine\Plugins\Marketplace\BetterDebug\Binaries\Win64. In case the .pdb is missing, it is probably a plugin issue.

Feel free to submit a dedicated tickets, so that we can verify exact scenarios and assist on case basis.

Hope to hear from you soon.

Have a nice day!

Tarnishablec, do you launch Debug right from Rider or you launch UE editor and then attach debugger?

Got the same problem. Debugging unreal source code works. Debugging a marketplace-Plugin (logic driver) and the breakpoint will not be accepted. 

The same problem occurs with any marketplace plugin. Did all the steps above but the issue still persists. This is my installation:

Regedit:

Plugin-Directory:
 

Rider version is 2024.3, Win10, UE5.3.2

Uploaded (LaunchedFromRider.txt, attachedFromRider.txt, capture.mp4 and rider logs) 

Upload-ID is 2025_01_27_6NYF9Qt2Y1dXN2bX34hH3r

Is there anything else I should try or provide?

Hello Delaron,

Thank you for the details shared. I reproduced this issue and submitted this bug to our tracker to investigate it alongside a developer: RIDER-122443 Debugging plugins from Marketplace doesn't work

Please watch the issue for further updates.

Have a nice day!

BTW… opening the uproject and the above steps of invalidating cache, worked for me.