Unable to debug .NET 8.0 console application: Debugger hangs during COM component invocation

Problem

Rider is unable to debug a .NET 8.0 console application. When initiating debugging, the build completes, the debugger initializes, but the process hangs, requiring the debugger to be terminated through the task manager. The application can run without issues outside of the debugging process.

Cause [Optional]

The issue occurs due to a corrupted .NET 8 installation, leading to the debugger hanging during the invocation of the COM component.

Example Log Snippet:

Thread: 31
 at [InlinedCallFrame]
 at [InlinedCallFrame]
 at JetBrains.Debugger.CorApi.ComInterop.ICorDebug.DebugActiveProcess(Int32, Int32, JetBrains.Debugger.CorApi.ComInterop.ICorDebugProcess ByRef)
 at Mono.Debugging.Win32.CorDebuggerSession.CorDebugAttachPid(UInt32)
 at Mono.Debugging.Win32.CoreClrDebuggerSession+<>c__DisplayClass15_0.<OnRun>b__1(CorDebugAndPid)
 at JetBrains.Debugger.CorApi.Pinvoke.CoreClrDebuggerUtil.RuntimeLoadCallback(Int32, Void*, System.Threading.Tasks.TaskCompletionSource`1<System.Reflection.Missing>, System.Action`1<CorDebugAndPid>, UInt32, JetBrains.Util.ILogger)
 at JetBrains.Debugger.CorApi.Pinvoke.CoreClrDebuggerUtil+<>c__DisplayClass6_2.<StartProcessWithDebuggerAsync_WinNT>b__4(Void*, Void*, Int32)
 at ILStubClass.IL_STUB_ReversePInvoke(Int64, Int64, Int32)

Resolution

Reinstall or update the .NET version to resolve the issue.

Steps to Fix:

1. Uninstall the current .NET 8 version.
   • Refer to Microsoft's official guide to uninstall .NET for steps.
2. Download and install the latest version of .NET 8 or .NET 9.
   • Visit the Microsoft Download page to retrieve the versions.
3. Update the application project to target the newly installed .NET version.
   • Edit the TargetFramework property in the .csproj file to match the installed .NET version.
4. Rebuild the solution and retry debugging.

If the issue persists, collect diagnostic logs as described in How to collect Rider logs with Traces and contact Rider support with the logs for further investigation.