Visual studio unable to attach to coreCLR. access is denied

Question

I have created a console app in Dot.net Core 2.0 and when I run the I am getting Unable to attach to CoreCLR. access is denied

I have tried, cleaning, deleting files in bin and obj and also tried running under 86x, but could not find any fix for this problem.

Caldera

Answer 1

I was able to solve this problem by installing the newer version of Dot.Net which is right now 2.1, in your case it could be different in future.

You can check newer stable version On Official Microsoft Site for Dot.net core here

and Original Post check

Caldera

Answer 2

In my case (for .net6) I had to change project file from:

<PublishSingleFile>true</PublishSingleFile>

To

<PublishSingleFile Condition="'$(Configuration)' == 'Release'">true</PublishSingleFile>

Apparently debuger cant handle single exe file.

Obstetrician

Great. This solved the "Unable to attach to CoreCLR. The debugger’s protocol is incompatible with the debuggee" error as well. Thank you! – Thermostatics

Attention JetBrains Rider devs: Rider fails silently for this issue. I didn't see the error message until I loaded VS2022 Community. – Oberhausen