Fixes #15049
The reason of this problem is existance two similar lines in the libbitcoin_server.vcxproj file that appears after the executing the msvc-autogen.py script .
line 157
<ItemGroup> <ClCompile Include="..\..\src\rpc\net.cpp"> <ObjectFileName Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">$(IntDir)\netrpc.obj</ObjectFileName> <ObjectFileName Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">$(IntDir)\netrpc.obj</ObjectFileName> <ObjectFileName Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(IntDir)\netrpc.obj</ObjectFileName> <ObjectFileName Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(IntDir)\netrpc.obj</ObjectFileName> </ClCompile>
line 256
<ItemGroup> <ClCompile Include="..\..\src\rpc\net.cpp"> <ObjectFileName>$(IntDir)rpc_net.obj</ObjectFileName> </ClCompile>