Azure / Azure/azure-functions-core-tools
Unable to debug Azure Functions
- Dominant language
- C#
- Stars
- 1.5k
- Forks
- 498
- Avg merge
- 4d 20h
- Merged PRs (30d)
- 14
Description
I'm unable to debug azure functions in vs 2019 (5 preview 2 and .4). Every time I try to start in the debugger the following message shows up:

I've reset all settings, repaired VS, and deleted the AzureFunctionsTools, and .templateengine folder. I can still debug .net core console apps.
PLEASE HELP.
I'm not the only one running into this issue:
https://developercommunity.visualstudio.com/content/problem/896770/fatal-error-when-debugging-an-azure-function-using.html
Contributor guide
Research direction
Start by reproducing the failure in Visual Studio 2019, using the Azure Functions project and debugger described in the issue. Compare the behavior with .NET Core console debugging and review the linked Visual Studio Developer Community report. Done means Azure Functions can start under the debugger without the reported fatal error.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- azure, csharp
- Domain
- cloud, devtools
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100