No connection could be made because the target machine actively refused it. (localhost:7071)

[AkGupSky]

We have an integration test for Az Function which uses Azure Function core tools to run the test in Azure Devops Build pipeline. It use to work day before yesterday but suddenly i am getting an error No connection could be made because the target machine actively refused it. (localhost:7071) below are the task that i am using to run the tests

• script: npm install -g azurite displayName: 'Install Azurite'

  • script : start /B azurite displayName: Run Azurite

    • task: Npm@1 displayName: Install Azure Core Tools inputs: command: 'custom' customCommand: 'i -g azure-functions-core-tools@4 --unsafe-perm true'

  • task: DotNetCoreCLI@2 displayName: Function Component Tests inputs: command: test projects: '*/.Function.Tests.Component.csproj' arguments: '--configuration $(buildConfiguration) --no-build -v normal --blame-hang --blame-hang-timeout 5m'

    I am unable to find proper reason behind the failure and with further debugging and logging ... I got this error
     **A JSON parsing exception occurred in [C:\npm\prefix\node_modules\azure-functions-core-tools\bin\func.deps.json], offset 0 (line 1, column 1): Invalid value.

Failed to load the dll from [C:\npm\prefix\node_modules\azure-functions-core-tools\bin\hostpolicy.dll], HRESULT: 0x800700C1

An error occurred while loading required library hostpolicy.dll from [C:\npm\prefix\node_modules\azure-functions-core-tools\bin]** [AzureCoreToolsInstallationLog.txt] (https://github.com/Azure/azure-functions-core-tools/files/11294976/AzureCoreToolsInstallationLog.txt)

Can anyone help me out with this issue ???

[htke1]

@AkGupSky Use http:127.0.0.1 instead of localhost, worked for me. I faced this issue while upgrading my azure function core tools from V3 to V4.

[fabricciotc]

@AkGupSky Did you find a solution?