NuGet Warning NU1512

RestoreForceEvaluate overrides RestoreLockedMode; the packages lock file will be re-evaluated and regenerated, and locked mode is ignored.

Issue

Both RestoreLockedMode and RestoreForceEvaluate are enabled for the restore, but these options are contradictory:

• RestoreLockedMode requires the packages.lock.json file to remain unchanged, and fails the restore if the resolved package dependencies differ from the lock file.
• RestoreForceEvaluate forces NuGet to re-evaluate the package dependencies and regenerate the lock file on every restore.

When both are set, RestoreForceEvaluate takes precedence: the lock file is re-evaluated and regenerated, and the requested locked mode is ignored. This warning is raised so that the ignored locked mode is not silent.

Solution

Enable only one of these properties, based on your intent:

• To guarantee repeatable restores (for example, in CI/CD scenarios), keep RestoreLockedMode enabled and stop setting RestoreForceEvaluate. For example, remove the --force-evaluate option (or -p:RestoreForceEvaluate=true) from your restore command:

  dotnet restore --locked-mode
  

• To intentionally re-evaluate floating versions and regenerate the lock file, keep RestoreForceEvaluate enabled and stop setting RestoreLockedMode:

  dotnet restore --force-evaluate
  

Note

This warning is raised by default starting with the .NET 11 SDK (SdkAnalysisLevel value 11.0.100 or higher). You can change the SdkAnalysisLevel property to control this behavior.