What Broke in the Dependency Graph
The existing assets file was restored for a different target framework or runtime identifier than the current build or publish command.
Repair the dependency graph
Restore for the specific TFM or RID, and include -r <rid> if publishing with a RID.
Delete obj/ and bin/ if needed, then restore and build again.
Ensure RuntimeIdentifiers includes the RID used by build or publish.
Validation
Re-run the failing command and confirm the original code/message is gone, and confirm expected artifacts or outputs exist (packages restored, build/publish succeeds).
Why Resolution Broke
Usually this comes down to stale obj/ came from a restore that targeted different TFMs, you are building or publishing with -r <rid> but restored without that RID, or CI caches or shares obj/ across TFMs or RIDs.
Prove the Graph Is Clean Again
dotnet build or dotnet publish succeeds without NETSDK1005 or NETSDK1047.
obj/project.assets.json contains a target for the requested TFM, and RID when applicable.
Typical Output
error NETSDK1005: Assets file 'obj/project.assets.json' doesn't have a target for 'net8.0'.
error NETSDK1047: Assets file 'obj/project.assets.json' doesn't have a target for 'net8.0/win-x64'.Mechanism
Assets file targets are keyed by TargetFramework, and sometimes by TargetFramework plus RuntimeIdentifier. If you build with a new TFM or RID but didn’t restore for it, NETSDK1005 or NETSDK1047 fires.
Keep the Dependency Graph Healthy
To prevent this, do not cache or share obj/ across different TFMs or RIDs, cache global packages instead, and always restore in the same configuration you build or publish.
Docs and source code
NETSDK1005 message template
Assets file missing a TargetFramework target. - GitHub
<data name="AssetsFileMissingTarget" xml:space="preserve">
<value>NETSDK1005: Assets file '{0}' doesn't have a target for '{1}'. Ensure that restore has run and that you have included '{2}' in the TargetFrameworks for your project.</value>
<comment>{StrBegins="NETSDK1005: "}</comment>
</data>NETSDK1047 message template
Assets file missing a TargetFramework/RuntimeIdentifier target. - GitHub
<data name="AssetsFileMissingRuntimeIdentifier" xml:space="preserve">
<value>NETSDK1047: Assets file '{0}' doesn't have a target for '{1}'. Ensure that restore has run and that you have included '{2}' in the TargetFrameworks for your project. You may also need to include '{3}' in your project's RuntimeIdentifiers.</value>
<comment>{StrBegins="NETSDK1047: "}</comment>
</data>