blocks|key|620986|text|我也遇到过类似的问题。我使用add程序卸载7.0.100-preview.5.22307.18SDK，然后将项目文件中的TargetFramework更改为使用7.0，然后能够加载项目。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|620987|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I experienced a similar problem.
I uninstalled the 7.0.100-preview.5.22307.18 sdk using add remove programs and then changed the TargetFramework in the project file to use 7.0 and then I was able to load the projects.

blocks|key|705111|text|修复Visual安装无助于我。卸载.net+7错误的工作负载(“wasm-tools”)也没有，因为任何卸载或修复它的尝试都会以相同的错误消息结束。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|705112|​|705113|📷|atomic|offset|length|705114|705115|由于没有常规的选项来解决这个问题，我只是继续实际删除了冲突的文件夹:+microsoft.net.workload.mono.toolchain，留下了第二个完整的microsoft.net.workload.mono.toolchain。它很幸运地解决了我机器上的问题。从现在起，我将更加谨慎地安装Ms+RC软件包|705116|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/d0e671b966311f64df9ea419f2f69bce.png|imageAlt^0|0|0|0|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@$G|X|H|Y|1|Z]]|A|$]]|$1|I|3|C|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S|T|-4]]]]

Repairing Visual Studio installation did not help me. Neither did uninstalling .net 7 faulty workload ('wasm-tools'), since any attempt to uninstall or repair it ended up in the same error message.
<a href="https://i.stack.imgur.com/ai4iV.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ai4iV.png" alt="enter image description here" /></a>
Being ran out of conventional options to address the issue, I just went ahead and physically deleted the conflicting folder: microsoft.net.workload.mono.toolchain, leaving second one microsoft.net.workload.mono.toolchain.net7 intact. It luckily solved problems on my machine. From now on I'll be more cautious on installing Ms RC packages

blocks|key|705122|text|除了在我的M1+mac上，我还有相同的问题。我按照下面的指南，手动删除了所有.net+7运行时和sdks的所有目录。然后重新安装.net7，现在一切似乎都很好。骑手可以打开我的项目，dotnet+cli不再抱怨|type|unstyled|depth|inlineStyleRanges|entityRanges|data|705123|不确定类似的焦土方法是否适用于窗户工人。|705124|https://devkimchi.com/2021/11/24/removing-dotnet-sdks-from-macos-manually/|offset|length|705125|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|22|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@$F|R|G|S|1|T]]|A|$]]|$1|H|3|-4|5|6|7|U|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|E]]]]

I had the same issue as above except on my M1 mac. I followed the following guide and manually removed all the directories for all the .net 7 runtimes and sdks. Then reinstalled .net7 and all seems to be well now. rider can open my projects and the dotnet cli no longer complains
Not sure if a similar scorched earth approach will work for the windows folks.
<a href="https://devkimchi.com/2021/11/24/removing-dotnet-sdks-from-macos-manually/" rel="nofollow noreferrer">https://devkimchi.com/2021/11/24/removing-dotnet-sdks-from-macos-manually/</a>

blocks|key|705150|text|我也遇到了类似的问题，甚至在新的.Net项目上也是如此。我使用add+remove程序卸载了7.0.100-preview.2.22153.17SDK，并再次创建了一个新项目。现在只剩下一个.Net+7.0+SDK+(来自)，如下所示。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|705151|​|705152|📷|atomic|offset|length|705153|705154|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/f9cbc02ed0dd4df0ffe3212019d78554.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

I had a similar problem, even on new .Net projects. I uninstalled the 7.0.100-preview.2.22153.17 SDK using add remove programs and I was able to create a new project again. I am now left with only one .Net 7.0 SDK (from Visual Studio) as shown below.
<a href="https://i.stack.imgur.com/nXVQU.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nXVQU.png" alt="enter image description here" /></a>

blocks|key|1604120|text|编辑:发布说明已知问题正式记录了这一点。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1604121|我来自.NET+SDK团队。很抱歉你要经历这一切。我很想对其他答案发表评论，但我没有这样的声誉。|1604122|蒂姆·法利建议的是一个官方认可的解决方案；卸载任何带有添加/删除程序的预览7+SDK都会解决这个问题。至于为什么会发生这种情况，以及为什么卸载预览SDK会解决这个问题，我在这里有一个解释：https://github.com/dotnet/sdk/issues/28947#issuecomment-1307987337。TLDR:在.NET+7预览开发过程中，一些工作负载被重命名，以支持多目标，并且当您下载新的RTM旧预览文件时，可能会干扰它。|1604123|建议更新TargetFramework，但这与此问题无关。通常，每个.NET版本和相关的新特性都会被关闭在TargetFramework+(+TFM+)后面，所以在更新TFM之前，事情不会中断，而不是在更新SDK时。(不幸的是，在这种情况下并非如此。)|style|CODE|1604124|针对升级到.NET+8时是否会再次发生这种情况，每个史考特：根据当前工作负载的结构，这个问题将再次发生。我们正在讨论如何进行更改，以防止这种情况再次发生，尽管这并不理想。我们还在考虑添加dotnet+workload+clean或其他东西来为您修复这个问题。在SDK线程上与我们交流，或者在这里与我沟通，是向我们发送有关这方面的反馈的好方法。|1604125|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/dotnet/core/blob/main/release-notes/7.0/known-issues.md#70-projects-using-certain-workloads-dont-load-build-and-or-run-if-net-7-preview-sdk-workloads-are-installed|1|https://stackoverflow.com/users/4789400/tim-farley|2|https://github.com/dotnet/sdk/issues/28947#issuecomment-1307987337|3|https://stackoverflow.com/users/1179286/scott^0|7|4|0|0|0|0|5|1|2M|1U|2|0|4|F|1H|F|0|2L|L|Q|3|3|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@$A|12|B|13|1|14]]|C|$]]|$1|D|3|E|5|6|7|15|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|16|8|@]|9|@$A|17|B|18|1|19]|$A|1A|B|1B|1|1C]]|C|$]]|$1|H|3|I|5|6|7|1D|8|@$A|1E|B|1F|J|K]|$A|1G|B|1H|J|K]]|9|@]|C|$]]|$1|L|3|M|5|6|7|1I|8|@$A|1J|B|1K|J|K]]|9|@$A|1L|B|1M|1|1N]]|C|$]]|$1|N|3|-4|5|6|7|1O|8|@]|9|@]|C|$]]]|O|$P|$5|Q|R|S|C|$T|U]]|V|$5|Q|R|S|C|$T|W]]|X|$5|Q|R|S|C|$T|Y]]|Z|$5|Q|R|S|C|$T|10]]]]

EDIT: This is officially documented in the release notes <a href="https://github.com/dotnet/core/blob/main/release-notes/7.0/known-issues.md#70-projects-using-certain-workloads-dont-load-build-and-or-run-if-net-7-preview-sdk-workloads-are-installed" rel="noreferrer">known issues</a>.
I'm from the .NET SDK team. Sorry you're going through this. I would love to comment on the other answers, but I don't have the reputation to do so.
What <a href="https://stackoverflow.com/users/4789400/tim-farley">Tim Farley</a> suggested is an officially endorsed workaround; uninstalling any preview 7 SDKs with add/remove programs should resolve the problem.
As for why this happened and why uninstalling preview SDKs will fix the issue, there's a bit of an explanation I put here: <a href="https://github.com/dotnet/sdk/issues/28947#issuecomment-1307987337" rel="noreferrer">https://github.com/dotnet/sdk/issues/28947#issuecomment-1307987337</a>.
TLDR: Some workloads were renamed in the middle of .NET 7 preview development to support things like multitargeting, and when you download the new RTM old preview files interfere can with it.
Updating the <code>TargetFramework</code> is recommended but it's unrelated to this issue. Usually breaking changes for each .NET version and related new features are gated behind your <code>TargetFramework</code> (TFM), so things don't break until you update the TFM, not when you update the SDK. (Unfortunately, not true in this case.)
In response to whether this will happen again or not when upgrading to .NET 8, per <a href="https://stackoverflow.com/users/1179286/scott">Scott</a>: with how workloads are currently structured this issue would happen again. We're discussing how to make changes to prevent this from happening again though as it's not ideal. We're also considering adding <code>dotnet workload clean</code> or something to repair this for you. Communicating with us on the SDK GH thread, or with me here, is a good way to send us feedback about this.

blocks|key|705214|text|卸载MicrosoftSDK7.0预览|type|unstyled|depth|inlineStyleRanges|entityRanges|data|705215|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Uninstall Microsoft .Net SDK 7.0 preview

blocks|key|618562|text|我也有同样的问题，只是我的系统目前没有安装.NET+7的预览版本，但是预览工件仍然在C:\Program+Files\dotnet\sdk-manifests\7.0.100目录中。我的解决方案是卸载.NET+7的稳定版本(而不是VS+2022中的版本)，然后安装并卸载7.0.100Preview.7。这样做会导致预览工件被移除并解决此错误。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|618563|entityMap^0|16|19|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

I had the same issue, except that no preview version of .NET 7 was currently installed on my system, but the preview artifacts were still in the <code>C:\Program Files\dotnet\sdk-manifests\7.0.100</code> directory. My solution was to uninstall the stable version of .NET 7 (not the version from VS 2022), then install and uninstall 7.0.100-preview.7. Doing so resulted in the preview artifacts being removed and this error being resolved.

blocks|key|1604203|text|我也有同样的问题，但我认为问题是因为M1+mac|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1604204|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I had same problem, but i think the problem because M1 mac

blocks|key|705293|text|也有同样的问题。删除windows卸载程序中手动安装的NET7SDK。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|705294|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Had the same problem. Deleted manually installed net 7 sdks in windows uninstaller.

blocks|key|705342|text|看起来"microsoft.net.workload.mono.toolchain.net7“清单中的"wasm-tools”工作负载定义与"microsoft.net.workload.mono.toolchain“清单之间存在冲突。如果安装了多个版本的SDK，并且.NET解析器正在读取相互冲突的定义，则可能会发生这种情况。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|705343|要解决此问题，可以尝试卸载.NET+SDK的任何冲突版本，然后重新安装当前使用的版本(SDKNET7.0.100)。这将解决冲突，并允许在Visual和Rider中再次加载现有应用程序。|705344|如果这不能解决问题，还可以尝试通过在命令提示符中运行以下命令来清除SDK解析器缓存：|705345|dotnet+clean+--interactive|code-block|syntax|javascript|705346|这将删除任何缓存的SDK信息，当您再次构建应用程序时，解析器将重新读取清单。这可能有助于解决冲突，并允许您的应用程序正确加载。|705347|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Q|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|R|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

It looks like there is a conflict between the &quot;wasm-tools&quot; workload definition in the &quot;microsoft.net.workload.mono.toolchain.net7&quot; manifest, and the &quot;microsoft.net.workload.mono.toolchain&quot; manifest. This can happen if you have multiple versions of the .NET SDK installed, and the conflicting definitions are being read by the SDK resolver.
To fix this issue, you can try uninstalling any conflicting versions of the .NET SDK, and then reinstalling the version you are currently using (SDK Net 7.0.100). This should resolve the conflict and allow your existing applications to load again in Visual Studio and Rider.
If this does not fix the issue, you can also try cleaning the SDK resolver cache by running the following command in a command prompt:
<pre class="lang-bash prettyprint-override"><code>dotnet clean --interactive

</code></pre>
This will remove any cached SDK information, and the resolver will re-read the manifests when you try to build your application again. This may help resolve the conflict and allow your applications to load correctly.

blocks|key|705383|text|我发现我需要rm+-rf+**/obj+(删除所有命名为obj的文件夹)，在从net+6升级到net+7之后，除了dotnet之外，还需要删除该根文件夹中的所有文件夹|type|unstyled|depth|inlineStyleRanges|entityRanges|data|705384|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I found out that I needed to rm -rf **/obj
(delete all folders named obj) in the solution root folder after upgrading from net 6 to net 7, in addition to dotnet clean

Just downloaded and installed SDK Net 7.0.100 and it broke existing applications and they won't load any more in VS 2022 or Rider.
Copied the follwing error:
<pre><code>error : SDK Resolver Failure: &quot;The SDK resolver &quot;Microsoft.DotNet.MSBuildSdkResolver&quot; 
failed while attempting to resolve the SDK &quot;Microsoft.NET.Sdk&quot;. Exception: &quot;Microsoft.NET.Sdk.WorkloadManifestReader.WorkloadManifestCompositionException: Workload definition 'wasm-tools' in manifest 'microsoft.net.workload.mono.toolchain.net7' [C:\Program Files\dotnet\sdk-manifests\7.0.100\microsoft.net.workload.mono.toolchain.net7\WorkloadManifest.json] conflicts with manifest 'microsoft.net.workload.mono.toolchain' [C:\Program Files\dotnet\sdk-manifests\7.0.100\microsoft.net.workload.mono.toolchain\WorkloadManifest.json]
 at Microsoft.NET.Sdk.WorkloadManifestReader.WorkloadResolver.ComposeWorkloadManifests()
 at Microsoft.NET.Sdk.WorkloadManifestReader.WorkloadResolver.Create(IWorkloadManifestProvider manifestProvider, String dotnetRootPath, String sdkVersion, String userProfileDir)
 at Microsoft.NET.Sdk.WorkloadMSBuildSdkResolver.CachingWorkloadResolver.Resolve(String sdkReferenceName, String dotnetRootPath, String sdkVersion, String userProfileDir)
 at Microsoft.DotNet.MSBuildSdkResolver.DotNetMSBuildSdkResolver.Resolve(SdkReference sdkReference, SdkResolverContext context, SdkResultFactory factory)
 at Microsoft.Build.BackEnd.SdkResolution.SdkResolverService.TryResolveSdkUsingSpecifiedResolvers(IList`1 resolvers, Int32 submissionId, SdkReference 
</code></pre>

SDK Resolver Failure - Net 7 - Net 6

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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刚刚下载并安装了SDKNET7.0.100，它破坏了现有的应用程序，它们将不再在VS 2022或Rider中加载。复制折叠错误：error  : SDK Resolver Failure: "The SDK resolver "Microsoft.DotNet.MSBuildSdkResolver" failed wh...

问SDK Resolver故障- Net 7- Net 6
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