Error : The OutputPath property is not set for project 'Project.Web.csproj'

Question

Building my Jenkins/MSBuild solution gives me this error

Build started 18-03-2017 14:38:15. Project "C:\\Program Files (x86)\\Jenkins\\workspace\\Development\\Project.Web\\Project.Web.csproj" on node 1 (default targets). C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\Microsoft.Common.targets(609,5): error : The OutputPath property is not set for project 'Project.Web.csproj'. Please check to make sure that you have specified a valid combination of Configuration and Platform for this project.
Configuration='Release' Platform='BPC'. You may be seeing this message because you are trying to build a project without a solution file, and have specified a non-default Configuration or Platform that doesn't exist for this project. [C:\\Program Files (x86)\\Jenkins\\workspace\\Development\\Project.Web\\Project.Web.csproj] Done Building Project "C:\\Program Files (x86)\\Jenkins\\workspace\\Development\\Project.Web\\Project.Web.csproj" (default targets) -- FAILED.

Build FAILED.

"C:\\Program Files (x86)\\Jenkins\\workspace\\Development\\Project.Web\\Project.Web.csproj" (default target) (1) ->(_CheckForInvalidConfigurationAndPlatform target) -> C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\Microsoft.Common.targets(609,5): error : The OutputPath property is not set for project 'Project.Web.csproj'. Please check to make sure that you have specified a valid combination of Configuration and Platform for this project.
Configuration='Release' Platform='BPC'. You may be seeing this message because you are trying to build a project without a solution file, and have specified a non-default Configuration or Platform that doesn't exist for this project. [C:\\Program Files (x86)\\Jenkins\\workspace\\Development\\Project.Web\\Project.Web.csproj]

0 Warning(s)
1 Error(s)

Time Elapsed 00:00:00.61 Build step 'Build a Visual Studio project or solution using MSBuild' marked build as failure Finished: FAILURE

I have this in my .csproj file

<PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">Any CPU</Platform>
    <ProductVersion>
    </ProductVersion>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{F1258E67-9E32-480033D0}</ProjectGuid>
    <ProjectTypeGuids>{349c5851-65df-165b846f21};{fae04ef79efbc}</ProjectTypeGuids>
    <OutputType>Library</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>Project.Web</RootNamespace>
    <AssemblyName>Project.Web</AssemblyName>
    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
    <MvcBuildViews>false</MvcBuildViews>
    <UseIISExpress>true</UseIISExpress>
    <IISExpressSSLPort />
    <IISExpressAnonymousAuthentication />
    <IISExpressWindowsAuthentication />
    <IISExpressUseClassicPipelineMode />
    <WebGreaseLibPath>..\packages\WebGrease.1.5.2\lib</WebGreaseLibPath>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release-VersionIncrement|Any CPU' ">
    <OutputPath>bin\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <Optimize>true</Optimize>
    <DebugType>pdbonly</DebugType>
    <PlatformTarget>AnyCPU</PlatformTarget>
    <CodeAnalysisUseTypeNameInSuppression>true</CodeAnalysisUseTypeNameInSuppression>
    <CodeAnalysisModuleSuppressionsFile>GlobalSuppressions.cs</CodeAnalysisModuleSuppressionsFile>
    <ErrorReport>prompt</ErrorReport>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|Any CPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>bin\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <PlatformTarget>AnyCPU</PlatformTarget>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|Any CPU' ">
    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>bin\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
  </PropertyGroup>
  <ItemGroup>

Answer 1

Looks like you try to build solution which have incorrect project' platform and configuration for current solution's platform and configuration. How you can see platform BPC is not defined in your project. Check .sln file or build only .csproj file with MSBuild .