When opening All.Applications solution in VS.NET 2026, the IDE complains about lacking targeting pack for .NET Framework 4.5 and attempts to upgrade the projects to .NET Framework 4.8. If agreed, the solution loads, but it does not build, providing errors like on the screen below. Since .NET Framework 4.5 targeting pack does not seem to be available for VS.NET 2026, there is no workaround for this problem.

When opening All.Applications solution in VS.NET 2026, the IDE complains about lacking targeting pack for .NET Framework 4.5 and attempts to upgrade the projects to .NET Framework 4.8. If agreed, the solution loads, but it does not build, providing errors like on the screen below. Since .NET Framework 4.5 targeting pack does not seem to be available for VS.NET 2026, there is no workaround for this problem.