Unable to run Durable Functions with Azure Storage Emulator v5.8

[csheets]

I was successfully running Durable Functions for a few weeks but now all of a sudden I am not able to run them and am getting the following output. Not sure what has changed -- any pointers on what to look at would be most appreciated. I have also included a related stacktrace below.

Azure Functions Core Tools (2.1.725 Commit hash: 68f448fe6a60e1cade88c2004bf6491
af7e5f1df)
Function Runtime Version: 2.0.12134.0
[10/14/2018 10:17:59 PM] Building host: startup suppressed:False, configuration
suppressed: False
[10/14/2018 10:17:59 PM] Reading host configuration file 'C:\Users\csheets\sourc
e\repos\FunctionApp4\FunctionApp1\bin\Debug\netstandard2.0\host.json'
[10/14/2018 10:17:59 PM] Host configuration file read:
[10/14/2018 10:17:59 PM] {
[10/14/2018 10:17:59 PM]   "version": "2.0"
[10/14/2018 10:17:59 PM] }
[10/14/2018 10:18:38 PM] A host error has occurred
[10/14/2018 10:18:38 PM] Microsoft.WindowsAzure.Storage: Server encountered an i
nternal error. Please try again after some time.
Listening on http://0.0.0.0:7071/
Hit CTRL-C to exit...

The following is a stacktrace that is being thrown:

System.AggregateException
  HResult=0x80131500
  Message=One or more errors occurred.
  Source=System.Private.CoreLib
  StackTrace:
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at Microsoft.WindowsAzure.Storage.Blob.BlobWriteStream.<Dispose>b__8_0()
   at Microsoft.WindowsAzure.Storage.Core.Util.CommonUtility.RunWithoutSynchronizationContext(Action actionToRun)
   at Microsoft.WindowsAzure.Storage.Blob.BlobWriteStream.Dispose(Boolean disposing)
   at System.IO.Stream.Close()
   at System.IO.StreamWriter.Dispose(Boolean disposing)
   at System.IO.TextWriter.Dispose()
   at Microsoft.Azure.WebJobs.Script.WebHost.BlobStorageSecretsRepository.<WriteToBlobAsync>d__22.MoveNext() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\Security\KeyManagement\BlobStorageSecretsRepository.cs:line 167
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at Microsoft.Azure.WebJobs.Script.WebHost.BlobStorageSecretsRepository.<WriteAsync>d__18.MoveNext() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\Security\KeyManagement\BlobStorageSecretsRepository.cs:line 128
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at Microsoft.Azure.WebJobs.Script.WebHost.SecretManager.<PersistSecretsAsync>d__26`1.MoveNext() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\Security\KeyManagement\SecretManager.cs:line 412
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at Microsoft.Azure.WebJobs.Script.WebHost.SecretManager.<GetHostSecretsAsync>d__11.MoveNext() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\Security\KeyManagement\SecretManager.cs:line 82
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Microsoft.Azure.WebJobs.Script.WebHost.DefaultScriptWebHookProvider.<GetOrCreateExtensionKey>d__6.MoveNext() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\WebHooks\DefaultScriptWebHookProvider.cs:line 72
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Microsoft.Azure.WebJobs.Script.WebHost.DefaultScriptWebHookProvider.GetExtensionWebHookRoute(String extensionName) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\WebHooks\DefaultScriptWebHookProvider.cs:line 64
   at Microsoft.Azure.WebJobs.Script.WebHost.DefaultScriptWebHookProvider.GetUrl(IExtensionConfigProvider extension) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\WebHooks\DefaultScriptWebHookProvider.cs:line 49
   at Microsoft.Azure.WebJobs.Host.Config.ExtensionConfigContext.GetWebhookHandler() in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Config\ExtensionConfigContext.cs:line 55
   at Microsoft.Azure.WebJobs.Extensions.DurableTask.DurableTaskExtension.Microsoft.Azure.WebJobs.Host.Config.IExtensionConfigProvider.Initialize(ExtensionConfigContext context)
   at Microsoft.Azure.WebJobs.Host.DefaultExtensionRegistryFactory.Create() in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\DefaultExtensionRegistryFactory.cs:line 38
   at Microsoft.Azure.WebJobs.WebJobsServiceCollectionExtensions.<>c.<AddWebJobs>b__1_0(IServiceProvider p) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Hosting\WebJobsServiceCollectionExtensions.cs:line 50
   at DryIoc.Microsoft.DependencyInjection.DryIocAdapter.<>c__DisplayClass3_0.<RegisterDescriptor>b__0(IResolverContext r) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\DryIocAdapter.cs:line 156
   at DryIoc.Registrator.<>c__DisplayClass27_0.<RegisterDelegate>b__0(IResolverContext r) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 4530
   at DryIoc.Factory.<>c__DisplayClass26_1.<ApplyReuse>b__2() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6584
   at DryIoc.Scope.TryGetOrAdd(ImMap`1 items, Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7825
   at DryIoc.Scope.GetOrAdd(Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7810
   at DryIoc.Factory.ApplyReuse(Expression serviceExpr, Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6583
   at DryIoc.Factory.GetExpressionOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6544
   at DryIoc.Factory.GetDelegateOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6611
   at DryIoc.DelegateFactory.GetDelegateOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7719
   at DryIoc.Container.DryIoc.IResolver.Resolve(Type serviceType, Object serviceKey, IfUnresolved ifUnresolved, Type requiredServiceType, Request preResolveParent, Object[] args) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 290
   at DryIoc.Factory.<>c__DisplayClass26_1.<ApplyReuse>b__2() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6584
   at DryIoc.Scope.TryGetOrAdd(ImMap`1 items, Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7825
   at DryIoc.Scope.GetOrAdd(Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7810
   at DryIoc.Factory.ApplyReuse(Expression serviceExpr, Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6583
   at DryIoc.Factory.GetExpressionOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6544
   at DryIoc.Factory.GetDelegateOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6611
   at DryIoc.Container.ResolveAndCacheDefaultFactoryDelegate(Type serviceType, IfUnresolved ifUnresolved) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 210
   at DryIoc.Container.DryIoc.IResolver.Resolve(Type serviceType, IfUnresolved ifUnresolved) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 195
   at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.JobHostServiceProvider.GetService(Type serviceType, IfUnresolved ifUnresolved) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\JobHostServiceProvider.cs:line 96
   at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.JobHostServiceProvider.GetRequiredService(Type serviceType) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\JobHostServiceProvider.cs:line 79
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.Azure.WebJobs.WebJobsServiceCollectionExtensions.<>c.<AddWebJobs>b__1_4(IServiceProvider p) in C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Hosting\WebJobsServiceCollectionExtensions.cs:line 83
   at DryIoc.Microsoft.DependencyInjection.DryIocAdapter.<>c__DisplayClass3_0.<RegisterDescriptor>b__0(IResolverContext r) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\DryIocAdapter.cs:line 156
   at DryIoc.Registrator.<>c__DisplayClass27_0.<RegisterDelegate>b__0(IResolverContext r) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 4530
   at DryIoc.Factory.<>c__DisplayClass26_1.<ApplyReuse>b__2() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6584
   at DryIoc.Scope.TryGetOrAdd(ImMap`1 items, Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7825
   at DryIoc.Scope.GetOrAdd(Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7810
   at DryIoc.Factory.ApplyReuse(Expression serviceExpr, Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6583
   at DryIoc.Factory.GetExpressionOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6544
   at DryIoc.Factory.GetDelegateOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6611
   at DryIoc.DelegateFactory.GetDelegateOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7719
   at DryIoc.Container.DryIoc.IResolver.Resolve(Type serviceType, Object serviceKey, IfUnresolved ifUnresolved, Type requiredServiceType, Request preResolveParent, Object[] args) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 290
   at DryIoc.Factory.<>c__DisplayClass26_1.<ApplyReuse>b__2() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6584
   at DryIoc.Scope.TryGetOrAdd(ImMap`1 items, Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7825
   at DryIoc.Scope.GetOrAdd(Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7810
   at DryIoc.Factory.ApplyReuse(Expression serviceExpr, Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6583
   at DryIoc.Factory.GetExpressionOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6544
   at DryIoc.ReflectionFactory.CreateExpressionOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7059
   at DryIoc.Factory.GetExpressionOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6534
   at DryIoc.ReflectionFactory.CreateExpressionOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7059
   at DryIoc.Factory.GetExpressionOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6534
   at DryIoc.Factory.GetDelegateOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6611
   at DryIoc.Container.ResolveAndCacheDefaultFactoryDelegate(Type serviceType, IfUnresolved ifUnresolved) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 210
   at DryIoc.Container.DryIoc.IResolver.Resolve(Type serviceType, IfUnresolved ifUnresolved) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 195
   at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.JobHostServiceProvider.GetService(Type serviceType, IfUnresolved ifUnresolved) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\JobHostServiceProvider.cs:line 96
   at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.JobHostServiceProvider.GetRequiredService(Type serviceType) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\JobHostServiceProvider.cs:line 79
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Microsoft.Azure.WebJobs.Script.ScriptHostBuilderExtensions.<>c.<AddScriptHostCore>b__2_5(IServiceProvider p) in C:\azure-webjobs-sdk-script\src\WebJobs.Script\ScriptHostBuilderExtensions.cs:line 115
   at DryIoc.Microsoft.DependencyInjection.DryIocAdapter.<>c__DisplayClass3_0.<RegisterDescriptor>b__0(IResolverContext r) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\DryIocAdapter.cs:line 156
   at DryIoc.Registrator.<>c__DisplayClass27_0.<RegisterDelegate>b__0(IResolverContext r) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 4530
   at DryIoc.Factory.<>c__DisplayClass26_1.<ApplyReuse>b__2() in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6584
   at DryIoc.Scope.TryGetOrAdd(ImMap`1 items, Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7825
   at DryIoc.Scope.GetOrAdd(Int32 id, CreateScopedValue createValue, Int32 disposalOrder) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7810
   at DryIoc.Factory.ApplyReuse(Expression serviceExpr, Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6583
   at DryIoc.Factory.GetExpressionOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6544
   at DryIoc.Factory.GetDelegateOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 6611
   at DryIoc.DelegateFactory.GetDelegateOrDefault(Request request) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 7719
   at DryIoc.Container.ResolveAndCacheDefaultFactoryDelegate(Type serviceType, IfUnresolved ifUnresolved) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 210
   at DryIoc.Container.DryIoc.IResolver.Resolve(Type serviceType, IfUnresolved ifUnresolved) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs:line 195
   at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.JobHostServiceProvider.GetService(Type serviceType, IfUnresolved ifUnresolved) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\JobHostServiceProvider.cs:line 96
   at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.JobHostServiceProvider.GetRequiredService(Type serviceType) in C:\azure-webjobs-sdk-script\src\WebJobs.Script.WebHost\DependencyInjection\JobHostServiceProvider.cs:line 79
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
   at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
   at Azure.Functions.Cli.Actions.HostActions.StartHostAction.<RunAsync>d__44.MoveNext()

Inner Exception 1:
StorageException: Server encountered an internal error. Please try again after some time.

[csheets]

I switched from using local storage emulator to using Azure StorageAccount and the function app run ok -- so it is something to do with the Azure Storage emulator but I have no idea what. I have attempted to uninstall and re-install the storage emulator but the same error occurs after the uninstall/re-install process.

[cgillum]

Which version of the storage emulator are you using? This actually doesn't appear to be a Durable Functions issue, but rather an issue with the Azure Functions host itself, which uses storage for things like key management (key management frames appear in your callstack).

[csheets]

I am using version: Windows Azure Storage Emulator 5.8.0.0 command line tool

I am able to run "regular" Azure Functions locally without any issues. Seems to be just Durable Functions that are having the problem.

[cgillum]

Thanks - I downloaded 5.8 and observed the same problem. I have no idea why the Durable extension seems to be triggering this issue because the code path seems completely unrelated. I'll follow up with the Azure Functions Host team. I think this might possibly be a problem with extensions that use web hooks.

Workaround

Here is a workaround I identified from the Functions Key Management documentation. In local.settings.json, add a new setting called AzureWebJobsSecretStorageType and set it to "files".

{
  "IsEncrypted": false,
  "Values": {
    "AzureWebJobsStorage": "UseDevelopmentStorage=true",
    "FUNCTIONS_WORKER_RUNTIME": "dotnet",
    "AzureWebJobsSecretStorageType": "files"
  }
}

/cc @fabiocav

[csheets]

ok - thanks

prior to your reply i ended up uninstalling and re-installing VS 2017 and that resolved the issue -- looks like it re-installed Storage Emulator 5.6 in the process so just going to stay there for now

[cgillum]

Good to know there is a way to go back (I might consider doing that as well).

I've also opened a bug in the Azure-Functions-Host repo to track this since it will likely affect more than just Durable Functions: #3621

[fabiocav]

Indeed, this is not specific to Durable Functions, but on a host code path it relies on.

This looks like an issue with the more recent version of the Emulator, we'll investigate.

[tsubakimoto]

I also encountered the same error.
Also, the problem is temporarily resolved by the method @cgillum presented. Thanks.
https://github.com/Azure/azure-functions-durable-extension/issues/474#issuecomment-430337085

I expect that the error will be resolved.

[fabiocav]

Moving this to host repo for triage and assignment

[apsteger]

I experienced this issue after installing the Visual Studio 2019 Preview. Installing Storage Emulator 5.9 fixed it for me.

[iwaldman]

I experienced the same issue. Thank you @cgillum for the workaround.

[opyke]

I am also experiencing this issue. Using the workaround.