Yellow exclamation point next to a project reference in Microsoft Visual Studio 2012 after conversion to a newer version of the IDE

When you convert a solution to a new version of the Microsoft Visual Studio IDE you can see yellow exclamation points next to some project references. When you build the solution you also get errors like the following: Error, The type or namespace name ‘…’ could not be found (are you missing a using directive […]

How to handle “The target version of the .NET Framework in the project does not match…” warning message in Microsoft Visual Studio

When you build the setup project in Microsoft Visual Studio 2010 you receive the following warning message: The target version of the .NET Framework in the project does not match the .NET Framework launch condition version ‘.NET Framework 4 Client Profile’. Update the version of the .NET Framework launch condition to match the target version […]

How to solve “The version of the .NET Framework launch condition ‘.NET Framework 4’ does not match…” warning in Microsoft Visual Studio

When you build the setup project in Microsoft Visual Studio 2010 you receive the following warning message: The version of the .NET Framework launch condition ‘.NET Framework 4’ does not match the selected .NET Framework bootstrapper package. Update the .NET Framework launch condition to match the version of the .NET Framework selected in the Prerequisites […]

How to fix “The OutputPath property is not set for project…” error in Microsoft Visual Studio

When you build your Visual Studio solution you get the following error message: The OutputPath property is not set for project ‘XYZ.csproj’. Please check to make sure that you have specified a valid combination of Configuration and Platform for this project. Configuration=’Debug’ Platform=’AnyCPU’. This error may also appear if some other project is trying to […]

Solving “The type or namespace name … could not be found” error in Microsoft Visual Studio

When you compile a .NET 4.0 C# application the following error message appears: The type or namespace name … could not be found (are you missing a using directive or an assembly reference?) There is also a warning message : The currently targeted framework “.NET Framework,Version=v4.0,Profile=Client” does not include “System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a” which the […]