Author Topic: Avast Free - macOS - JetBrains Rider - "Can't connect to protocol model" error  (Read 2665 times)

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Offline encounter12

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Issue: On MacOS using JetBrains Rider when I try to Run Project or Rebuild Solution using .NET 5 ocassionally (but often, after 7-8 runs/build) the run/build freezes and after 15-20 seconds the following error occurs:
"Can't connect to protocol model"

Troubleshooting performed: When I TURN OFF the Avast Security FILE SHIELD the issue IS SOLVED. Having File Shield ON, and adding exception path for:

/Users/my.username/Projects/ - my .NET projects folder
/usr/local/share/dotnet/ - .NET SDK and Runtime folder

DOES NOT resolve the problem.

For now I'm using the workaround with Filed Shield OFF. Let me know if any Avast Security logs are needed (describe how to get the logs).


Avast Security (Free edition): Version 14.7 (2b2cffda65aa), Virus definitions: 20122306

JetBrains Rider: Version 2020.3 Build #RD-203.5981.141

5.0.101 [/usr/local/share/dotnet/sdk]

.NET Runtime:
Microsoft.NETCore.App 5.0.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

macOS: Big Sur Version 11.1


Build - Rebuild Solution - Run - "Run Project name"

Build with surface heuristics started at 06:31:19
Use build tool: /usr/local/share/dotnet/sdk/5.0.101/MSBuild.dll
CONSOLE: Microsoft (R) Build Engine version 16.8.0+126527ff1 for .NET
CONSOLE: Copyright (C) Microsoft Corporation. All rights reserved.
CONSOLE: Build started 12/24/2020 06:31:19.

Error details:

  Can't connect to protocol model
   at JetBrains.Platform.RdFramework.ExternalProcess.ProtocolExternalProcess`2.Run()
   at JetBrains.Platform.MsBuildHost.MsBuildConnectionFactory.Create(Lifetime lifetime, MsBuildConnectionContext context)
   at JetBrains.ReSharper.Features.SolBuilderDuo.Services.OutOfProcBuildSessionContextFactory.CreateSession(Lifetime lifetime, SolutionBuilderRequest solutionBuilderRequest, IBuildTool msBuildForSolution, MsBuildConnectionContext connectionContext, RdBuildSessionContext context2, SolutionBuilderSettings buildSettings)
   at JetBrains.ReSharper.Features.SolBuilderDuo.Services.OutOfProcBuildSessionContextFactory.<>c__DisplayClass16_0.<Create>b__2()
   at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)
   at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)
   at System.Lazy`1.CreateValue()
   at JetBrains.ReSharper.Features.SolBuilderDuo.Services.OutOfProcBuildRunner.BeginBuild(BuildLaunchContext buildLaunchContext, IProject project, Action`1 callback)
   at JetBrains.ReSharper.Features.SolBuilderDuo.Services.SolutionBuilderCommandProcessor.TryRunBuildingNextProjectsLayer()
   at JetBrains.ReSharper.Features.SolBuilderDuo.Services.SolutionBuilderCommandProcessor.ProceedBeginBuildCommand(BeginProcessCommand command)
   at JetBrains.Util.SwitchUtil.Switch[T](Object o, Action`1 action)
   at JetBrains.ReSharper.Features.SolBuilderDuo.Services.SolutionBuilderControllerPrototype.ProceedCommand(ISolutionBuilderCommand command)
   at JetBrains.Lifetimes.LifetimeDefinition.TryExecute(Action action, Boolean wrapExceptions)
   at JetBrains.ReSharper.Features.SolBuilderDuo.Services.SolutionBuilderControllerPrototype.ProceedCommands()

Offline ondrej.kolacek

  • Avast team
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  • Posts: 394

Thanks for reporting the issue.

I have sent you an email regarding further diagnostics; please check your mailbox.

Kind regards,
Ondrej Kolacek.

Offline encounter12

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  • Posts: 2
Hi, Ondrej.
Sorry for the big delay. I have followed your instructions in the email and generated support package, then I replied to your email too. Please, let me know if I could be of further assistance. I will be glad to know if there is any development on the issue. Thank you and have a wonderful day.