Unable to debug in-process web project (ASP.NET Core Module)

6
votes

I'm experimenting with the ASP.NET Core Module introduced in ASP.NET Core v2.2.0, specifically the in-process hosting. I am able to get it to work in production, but while developing, Visual Studio warns me that breakpoints won't be hit because no symbols have been loaded for the document.
I suspect this has to do with the in-process mode, Visual Studio doesn't know how to attach itself to the service (w3wp.exe).

Does anyone know what I'm missing? As soon as I switch to out-of-process hosting, the breakpoints work as they should.

https://docs.microsoft.com/en-us/aspnet/core/host-and-deploy/aspnet-core-module?view=aspnetcore-2.2

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2
c#iisasp.net-core
are you running debug mode? – Vova Bilyachat
have you tried manually attaching to w3wp.exe? – Jazb
@JohnB No, but I don't want to have to manually attach every time I want to test my app, I just want to press F5 and it should work as normal. – silkfire
Cannot reproduce this. Make sure that you download and instal latest ASP.NET Core/.NET Core: Runtime & Hosting Bundle from dotnet.microsoft.com/download/dotnet-core/2.2 Version mismatch can lead to unexpected issues. – Lex Li

2 Answers

0
votes

(I can't put it in a simple comment as I don't have needed reputation)

Maybe have a look at this stackoverflow question if you haven't. Personnaly, last (and only) time I had this "error" on a breakpoint, I had to install again VS.

0
votes

I got a same issue. What I noticed is that in runtime value of modules="AspNetCoreModuleV2" is changed to modules="AspNetCoreModule" in my Web.Config file.