Exception with mysterious description while trying to initialize yt_dlp from C# #2675

WillPittenger · 2025-12-28T00:10:57Z

WillPittenger
Dec 28, 2025

I have a C# project from which I'm trying to experiment with calling yt-dlp. On the follow statement, I get an exception for which the message is that the exception was thrown. The exception's InnerException is null. What could be going on?

Exception of type 'System.ExecutionEngineException' was thrown.

I tried to step into the code, but quickly ran into unmanaged code before finding where the exception was thrown.

Fatal error. 0xC0000005
   at Python.Runtime.Runtime.PyImport_ImportModule(System.String)
   at Python.Runtime.PyModule.Import(System.String)
   at Python.Runtime.Py.Import(System.String)
   at YtDlpTest.TestYtDlp..ctor()
   at DynamicClass.lambda_method172(System.Runtime.CompilerServices.Closure)
   at System.Management.Automation.CommandProcessor.Init(System.Management.Automation.CmdletInfo)
   at System.Management.Automation.CommandDiscovery.LookupCommandProcessor(System.Management.Automation.CommandInfo, System.Management.Automation.CommandOrigin, System.Nullable`1<Boolean>, System.Management.Automation.SessionStateInternal)
   at System.Management.Automation.CommandDiscovery.LookupCommandProcessor(System.String, System.Management.Automation.CommandOrigin, System.Nullable`1<Boolean>)
   at System.Management.Automation.ExecutionContext.CreateCommand(System.String, Boolean)
   at System.Management.Automation.PipelineOps.AddCommand(System.Management.Automation.Internal.PipelineProcessor, System.Management.Automation.CommandParameterInternal[], System.Management.Automation.Language.CommandBaseAst, System.Management.Automation.CommandRedirection[], System.Management.Automation.ExecutionContext)
   at System.Management.Automation.PipelineOps.InvokePipeline(System.Object, Boolean, System.Management.Automation.CommandParameterInternal[][], System.Management.Automation.Language.CommandBaseAst[], System.Management.Automation.CommandRedirection[][], System.Management.Automation.Language.FunctionContext)
   at System.Management.Automation.Interpreter.ActionCallInstruction`6[[System.__Canon, System.Private.CoreLib, Version=9.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.Boolean, System.Private.CoreLib, Version=9.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=9.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=9.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=9.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e],[System.__Canon, System.Private.CoreLib, Version=9.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.Interpreter.Run(System.Management.Automation.Interpreter.InterpretedFrame)
   at System.Management.Automation.Interpreter.LightLambda.RunVoid1[[System.__Canon, System.Private.CoreLib, Version=9.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]](System.__Canon)
   at System.Management.Automation.DlrScriptCommandProcessor.RunClause(System.Action`1<System.Management.Automation.Language.FunctionContext>, System.Object, System.Object)
   at System.Management.Automation.DlrScriptCommandProcessor.Complete()
   at System.Management.Automation.CommandProcessorBase.DoComplete()
   at System.Management.Automation.Internal.PipelineProcessor.DoCompleteCore(System.Management.Automation.CommandProcessorBase)
   at System.Management.Automation.Internal.PipelineProcessor.SynchronousExecuteEnumerate(System.Object)
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeHelper()
   at System.Management.Automation.Runspaces.LocalPipeline.InvokeThreadProc()
   at System.Management.Automation.Runspaces.PipelineThread.WorkerProc()
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)

Answered by WillPittenger

Jan 3, 2026

Now I find out I have to use gil for even the import. The source I was following didn't mention that.

View full answer

filmor · 2025-12-28T11:20:36Z

filmor
Dec 28, 2025
Maintainer

0xC0000005 is a classic Windows error, indicating invalid executable files. This can happen if you are mixing different bitness in a single program. Without your actual code, it's difficult to tell what's going on...

4 replies

WillPittenger Dec 29, 2025
Author

YtDlpTest

WillPittenger Dec 30, 2025
Author

Did you try building it?

WillPittenger Jan 1, 2026
Author

@filmor You didn't reply. I did realize the version of my project in Git was out of date. I just fixed that. It was demonstrating other problems that have since been fixed.

WillPittenger Jan 2, 2026
Author

indicating invalid executable files. This can happen if you are mixing different bitness in a single program. Without your actual code, it's difficult to tell what's going on...

@filmor I supplied you the code and you don't answer.

WillPittenger · 2026-01-03T22:06:39Z

WillPittenger
Jan 3, 2026
Author

Now I find out I have to use gil for even the import. The source I was following didn't mention that.

2 replies

filmor Jan 3, 2026
Maintainer

You are very welcome. If you behave like this again, you will be banned from interaction on this project. And it does not matter whether that is towards me or anyone else who responds to you.

WillPittenger Jan 4, 2026
Author

Sorry about that. But you didn't respond at all. I was left scratching my head. A "I'm busy right now" would've been nice. I was fortunate Gemini finally figured it out. I had no idea how to explain the issue to it for a while. As is, until you responded, I had no idea the code was a HRESULT.

Uh oh!

Exception with mysterious description while trying to initialize yt_dlp from C# #2675

Uh oh!

Uh oh!

WillPittenger Dec 28, 2025

Replies: 2 comments · 6 replies

Uh oh!

filmor Dec 28, 2025 Maintainer

Uh oh!

WillPittenger Dec 29, 2025 Author

Uh oh!

WillPittenger Dec 30, 2025 Author

Uh oh!

WillPittenger Jan 1, 2026 Author

Uh oh!

WillPittenger Jan 2, 2026 Author

Uh oh!

Uh oh!

WillPittenger Jan 3, 2026 Author

Uh oh!

filmor Jan 3, 2026 Maintainer

Uh oh!

WillPittenger Jan 4, 2026 Author

WillPittenger
Dec 28, 2025

Replies: 2 comments 6 replies

filmor
Dec 28, 2025
Maintainer

WillPittenger Dec 29, 2025
Author

WillPittenger Dec 30, 2025
Author

WillPittenger Jan 1, 2026
Author

WillPittenger Jan 2, 2026
Author

WillPittenger
Jan 3, 2026
Author

filmor Jan 3, 2026
Maintainer

WillPittenger Jan 4, 2026
Author