Azure Functions
An Azure service that provides an event-driven serverless compute platform.
5,935 questions
System.IO.FileNotFoundException HResult=0x80070002 Message=Could not load file or assembly 'System.Memory, Version=8.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified. Source=Microsoft.Extensions.Fil
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(12.8, 9%, 11%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EHJ%3C/text%3E%3C/svg%3E)
Harshalkumar Jain
0
Reputation points
We are upgrading our azure functions - .NET core - from version 6 to 8
Getting below error when solution is run from visual studio 2022
System.IO.FileNotFoundException
HResult=0x80070002 Message=Could not load file or assembly 'System.Memory, Version=8.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified. Source=Microsoft.Extensions.FileProviders.Physical Below is the complete stack trace
System.IO.FileNotFoundException
HResult=0x80070002 Message=Could not load file or assembly 'System.Memory, Version=8.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified. Source=Microsoft.Extensions.FileProviders.Physical StackTrace: at Microsoft.Extensions.FileProviders.Physical.Internal.PathUtils.HasInvalidFilterChars(String path) at Microsoft.Extensions.FileProviders.PhysicalFileProvider.Watch(String filter) at Microsoft.Extensions.Primitives.ChangeToken.OnChange(Func`1 changeTokenProducer, Action changeTokenConsumer) at Microsoft.Extensions.Configuration.FileConfigurationProvider..ctor(FileConfigurationSource source) at Microsoft.Extensions.Configuration.Json.JsonConfigurationSource.Build(IConfigurationBuilder builder) at Microsoft.Extensions.Configuration.ConfigurationBuilder.Build() at JohnsonControls.FireStorm.WorkspaceService.AzureFunctionsAppStartup.Configure(IWebJobsBuilder builder) in C:\XXXXXXXXXXXXXXX\App\AzureFunctionsAppStartup.cs:line 55 at Microsoft.Azure.WebJobs.WebJobsBuilderExtensions.ConfigureAndLogUserConfiguredServices(IWebJobsStartup startup, WebJobsBuilderContext context, IWebJobsBuilder builder, ILoggerFactory loggerFactory) at Microsoft.Azure.WebJobs.WebJobsBuilderExtensions.UseWebJobsStartup(IWebJobsBuilder builder, Type startupType, WebJobsBuilderContext context, ILoggerFactory loggerFactory) at Microsoft.Azure.WebJobs.WebJobsBuilderExtensions.UseExternalStartup(IWebJobsBuilder builder, IWebJobsStartupTypeLocator startupTypeLocator, WebJobsBuilderContext context, ILoggerFactory loggerFactory) at Microsoft.Azure.WebJobs.Script.ScriptHostBuilderExtensions.<>c__DisplayClass7_0.<AddScriptHostCore>b__1(HostBuilderContext context, IWebJobsBuilder webJobsBuilder)
What I have done so far?
Upgraded visual studio to 2022 Version 17.8.6
Installed .NET SDK 8.0.101 (x64)
Installed .NET SDK 8.0.101 (x64) - from visual studio
Updated global.json as below
{
"sdk": { "version": "8.0.101" } } In the code .csproj files - replaced references from version 6.0.0 to 8.0.0
Upgraded nuget packages for which build in Visual studio was failing to latest stable version
Such as – Azure.Identity, Microsoft.Identity.Client and a few more Installed a few additional nuget packages
Thus with these changes & a few more, and few trials / errors, - the build/rebuild is successful in Visual studio
But now when I run the solution - getting below error
System.IO.FileNotFoundException HResult=0x80070002 Message=Could not load file or assembly 'System.Memory, Version=8.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified. Source=Microsoft.Extensions.Fil......
This issue happens in AzureFunctionAppStartup class in – configure() method while creating ConfigurationBuilder()
Below code snippt of my .csproject file <ItemGroup> <PackageReference Include="Azure.Messaging.EventHubs" Version="5.7.2" /> <PackageReference Include="Microsoft.Azure.Cosmos" Version="3.31.0" /> <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.CosmosDB" Version="3.0.10" /> <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.EventHubs" Version="5.1.2" /> <PackageReference Include="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0"> <PrivateAssets>all</PrivateAssets> <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets> </PackageReference> <PackageReference Include="Microsoft.CSharp" Version="4.7.0" /> <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.FileProviders.Abstractions" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.FileProviders.Physical" Version="8.0.0" /> <PackageReference Include="Microsoft.Graph" Version="4.43.0" /> <PackageReference Include="Microsoft.Identity.Client" Version="4.59.0" /> <PackageReference Include="Microsoft.NET.Sdk.Functions" Version="4.1.3" /> <PackageReference Include="AutoMapper" Version="12.0.0" /> <PackageReference Include="AutoMapper.Extensions.Microsoft.DependencyInjection" Version="12.0.0" /> <PackageReference Include="StyleCop.Analyzers" Version="1.1.118"> <PrivateAssets>all</PrivateAssets> <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets> </PackageReference> <PackageReference Include="System.Memory" Version="4.5.5" /> <PackageReference Include="System.Memory.Data" Version="8.0.0" /> </ItemGroup> FYI - We have microservices architecture and are using Refit
We have not even tried to deploy the function in azure portal, we are getting issues on local system in visual studio
Azure Functions
Developer technologies | ASP.NET | ASP.NET Core
4,828 questions
Developer technologies | Visual Studio | Other
5,455 questions
{count} votes
-
Sedat SALMAN 14,180 Reputation points MVP2024-02-11T05:17:21.2333333+00:00 - Confirm the .NET 8 SDK is properly installed by running dotnet --list-sdks.
- Clear NuGet caches with dotnet nuget locals all --clear and restore packages with dotnet restore.
- check your reference library in your project file Change the reference of the file to the correct version
-
Harshalkumar Jain 0 Reputation points
2024-02-12T06:09:35.23+00:00 Tried all these steps, but still same error below System.IO.FileNotFoundException: 'Could not load file or assembly 'System.Memory, Version=8.0.0.0, Culture=neutral below few references from proj file <PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.Configuration.FileExtensions" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.FileProviders.Abstractions" Version="8.0.0" /> <PackageReference Include="Microsoft.Extensions.FileProviders.Physical" Version="8.0.0" />
-
MayankBargali-MSFT 70,941 Reputation points Moderator2024-02-12T06:20:00.7+00:00 @Harshalkumar Jain Thanks for reaching out as per your package reference I can see the below:
<PackageReference Include="System.Memory" Version="4.5.5" /> <PackageReference Include="System.Memory.Data" Version="8.0.0" />
The System.Memory is referring to 4.5.5 to the correct version which is the latest version as per nuget package but System.Memory.Data refers to 8.0.0 which couldn't be found in your assembly as per this.
You can either try removing both the packages and install it again and see if it resolves the issue.
-
Harshalkumar Jain 0 Reputation points
2024-02-12T06:25:49.2533333+00:00 Thanks for reply Yes I already tried by removing - System.Memory" Version="4.5.5, but still same error There is no System.Memory 8.0.0.0 available on NUGET, 4.5.5 is the latest I think what might be happening is - inside Configure method of AzureStartup class - my code uses - Microsoft.Extensions.Configuration 8.0.0, which in turn trying to use/call - System.Memory 8.0.0?
-
MayankBargali-MSFT 70,941 Reputation points Moderator
2024-02-12T12:59:18.3433333+00:00 @Harshalkumar Jain Can you confirm what value you have define to the <TargetFramework> and are you using in-proc or isolated model? I will also suggest you to create the issue in this repo so it can track and the expert from azure function host can share their insights and thoughts.
-
Harshalkumar Jain 0 Reputation points
2024-02-12T13:31:31.4166667+00:00 Below is entry from my .csproj file <TargetFramework>net8.0</TargetFramework> We have - FUNCTIONS_WORKER_RUNTIME = dotnet, so it is in-proc I am unable to create an issue in repo suggested by you - 'New issue' button is disabled for me
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(128, 8%, 22%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EA%3C/text%3E%3C/svg%3E)
Anonymous2024-02-12T23:29:31.0733333+00:00 certutil -setreg ca\CRLFlags +CRLF_DISABLE_ROOT_CROSS_CERTS
-
Harshalkumar Jain 0 Reputation points
2024-02-13T04:24:10.51+00:00 Thanks for this But can you please tell me what this command is? what it does?
-
Harshalkumar Jain 0 Reputation points
2024-02-13T04:50:43.12+00:00 @MayankBargali-MSFT FYI Actually I was getting below runtime error at first Error configuring services in an external startup class. [2024-02-13T04:46:27.860Z] Error configuring services in an external startup class. ****************: Method not found: 'Microsoft.Extensions.Configuration.IConfigurationBuilder Microsoft.Extensions.Configuration.FileConfigurationExtensions.SetBasePath(Microsoft.Extensions.Configuration.IConfigurationBuilder, System.String)'. [2024-02-13T04:46:27.874Z] A host error has occurred during startup operation 'b1b82382-49e7-4897-8db3-e8c23ae4fc55'. [2024-02-13T04:46:27.875Z] Microsoft.Azure.WebJobs.Script: Error configuring services in an external startup class. ****************: Method not found: 'Microsoft.Extensions.Configuration.IConfigurationBuilder Microsoft.Extensions.Configuration.FileConfigurationExtensions.SetBasePath(Microsoft.Extensions.Configuration.IConfigurationBuilder, System.String)'. To fix this - I installed below packages
and after installing above packages - i started getting this i.e. below runtime error System.IO.FileNotFoundException: 'Could not load file or assembly 'System.Memory, Version=8.0.0.0, Culture=neutral
-
Harshalkumar Jain 0 Reputation points
2024-02-13T05:15:23.6633333+00:00 @MayankBargali-MSFT below is screen-shot of the error
-
MayankBargali-MSFT 70,941 Reputation points Moderator
2024-02-14T11:19:43.5933333+00:00 @Harshalkumar Jain This would need to review over one on one support to validate and perform some changes as I don't see any know issue or couldn't reproduce the same at my end. I will suggest to engage us and if you don't have the support plan then please let me know.
Sign in to comment
Sign in to answer