CS8034 - Visual Studio2022's NetAnalyzers.dll cannot load when opening MAUI solution HRESULT:0x80131515

Question

CS8034 - Visual Studio2022's NetAnalyzers.dll cannot load when opening MAUI solution HRESULT:0x80131515

Diao Zhihang 1 Student Ambassador

CS8034 - HRESULT:0x80131515 - Visual Studio2022's NetAnalyzers.dll and 5+ dll cannot load when opening MAUI solution.
And i tried using Visual Studio Installer to fix and update it,but nothing changed.

also tried unblocking these dlls,but i cant find that button.

List of dlls:
Microsoft.Extensions.Logging.Generators.dll
Microsoft.Maui.Controls.SourceGen.dll
Microsoft.CodeAnalysis.NetAnalyzers.dll
Microsoft.CodeAnalysis.CSharp.NetAnalyzers.dll
System.Text.Json.SourceGeneration.dll

严重性代码说明项目文件行禁止显示状态
警告 CS8034 无法加载分析器程序集 C:\Users\MadTom.nuget\packages\microsoft.extensions.logging.abstractions\6.0.1\analyzers\dotnet\roslyn4.0\cs\Microsoft.Extensions.Logging.Generators.dll: 未能加载文件或程序集“file:///C:\Users\MadTom\AppData\Local\Temp\VS\AnalyzerAssemblyLoader\0b86fc602d1c423eb3f55bbb2874218b\51\Microsoft.Extensions.Logging.Generators.dll”或它的某一个依赖项。不支持操作。 (异常来自 HRESULT:0x80131515) Lagrange_Assistant (net6.0-windows10.0.19041.0) 1 活动

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2022-10-28T07:17:45.133+00:00

Hi @Diao Zhihang , could you provide the detailed VS version, Microsoft.Extensions version and the detailed environment information? Do you use any other NuGet packages? As noted in the Q&A FAQ: How to write a quality question
For further investigation, may I ask if you still meet this error when creating/opening/running an empty template MAUI project?
Diao Zhihang 1 Reputation point Student Ambassador

2022-11-01T05:22:38.627+00:00

it happens on every maui projects even on newly created solution.The sdk version is 6.0.402 and my os version is 21H2 1000.22000.978.0,visual studio community 2022 is up to date and its version is 17.3.6
Diao Zhihang 1 Reputation point Student Ambassador

2022-11-01T05:27:58.513+00:00

Microsoft.CodeAnalysis.CSharp.NetAnalyzers.dll - 6.0.5.1901
Microsoft.CodeAnalysis.NetAnalyzers.dll - 6.0.5.1901
Microsoft.Extensions.Logging.Generators.dll - 6.0.6.12309
Microsoft.Maui.Controls.SourceGen.dll - 6.0.541.0
System.Text.Json.SourceGeneration.dll - 6.0.6.47605

seems like all analyzers didn't load.

1 answer

Your answer

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 36,436 Reputation points Microsoft External Staff

2022-10-28T07:17:45.133+00:00

Hi @Diao Zhihang , could you provide the detailed VS version, Microsoft.Extensions version and the detailed environment information? Do you use any other NuGet packages? As noted in the Q&A FAQ: How to write a quality question
For further investigation, may I ask if you still meet this error when creating/opening/running an empty template MAUI project?
Diao Zhihang 1 Reputation point Student Ambassador

2022-11-01T05:22:38.627+00:00

it happens on every maui projects even on newly created solution.The sdk version is 6.0.402 and my os version is 21H2 1000.22000.978.0,visual studio community 2022 is up to date and its version is 17.3.6
Diao Zhihang 1 Reputation point Student Ambassador

2022-11-01T05:27:58.513+00:00

Microsoft.CodeAnalysis.CSharp.NetAnalyzers.dll - 6.0.5.1901
Microsoft.CodeAnalysis.NetAnalyzers.dll - 6.0.5.1901
Microsoft.Extensions.Logging.Generators.dll - 6.0.6.12309
Microsoft.Maui.Controls.SourceGen.dll - 6.0.541.0
System.Text.Json.SourceGeneration.dll - 6.0.6.47605

seems like all analyzers didn't load.

Answer 1

Tianyu Sun-MSFT 34,436 Microsoft External Staff

Hi @Diao Zhihang ,

Please try following suggestions:

Does this issue appear on other newly created projects like C# console applications, C# Windows forms applications? If so, please try to disable your antivirus(If you have antivirus installed), reboot your machine and test again.
Try to restore NuGet packages(Tools > NuGet Package Manager > Package Manager Settings > Clear All NuGet Cache. Right-click your solution > choose Restore NuGet Packages).
Try to reinstall .NET Multi-platform App UI development workload(open VS Installer > Modify > Workloads > uncheck “.NET Multi-platform App UI development” > uninstall this workload > check it again > reinstall this workload).

Best Regards,
Tianyu

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Diao Zhihang 1 Reputation point Student Ambassador

2022-11-02T04:32:59.22+00:00

just appears on MAUI solutions, everything fine on .NET Framework and .NET5.0 Console solutions.i've already reinstalled workload even reinstalled visual studio.But it still cant load analyzers.
Diao Zhihang 1 Reputation point Student Ambassador

2022-11-02T04:46:19.153+00:00

also reset nuget packages didnt work
Tianyu Sun-MSFT 34,436 Reputation points Microsoft External Staff

2022-11-03T07:14:42.353+00:00

Hi @Diao Zhihang ,

Since reinstalling VS doesn’t work, I would suggest you try to reinstall .NET SDKs. Please check following links for more details: Uninstall .NET, Download .NET.
Diao Zhihang 1 Reputation point Student Ambassador

2022-11-04T04:02:59.42+00:00

still didnt work,and i noticed that this has an error in VS after opening a MAUI solution : unable to start local IDB proxy
Tianyu Sun-MSFT 34,436 Reputation points Microsoft External Staff

2022-11-07T09:13:12.62+00:00

Hi @Diao Zhihang ,

I suspect the files are blocked. If you navigate to the directories which stores these dll files, and then right-click them => Properties => tick Unblock option to unblock these files, will the issue disappear?
Diao Zhihang 1 Reputation point Student Ambassador

2022-11-08T02:39:33.967+00:00

there is no unblock button in properties and i disabled windows defender in gpedit.So it probably not caused by security check.
Tianyu Sun-MSFT 34,436 Reputation points Microsoft External Staff

2022-11-08T08:45:55.417+00:00

Hi @Diao Zhihang ,

I’m not sure if your machine is included in any policy group, or any antivirus which you are using may cause this issue. If you can confirm that they don’t block the .dll files from loading, I would suggest you also raise a ticket on our Developer Community in case this is a potential issue.

Regards,
Tianyu

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CS8034 - Visual Studio2022's NetAnalyzers.dll cannot load when opening MAUI solution HRESULT:0x80131515

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