Visual Studio 2015 can't open project.exe for writing. Access to path denied
I am developing a VB.NET (4.5 framework) solution in Visual Studio 2015, Win10 OS, and have been able to run the builds uninhibited for several months, but now I am receiving the following error upon starting the build: vbc : error BC2012: can't open 'C:\MyProject\ProjR5\ProjR5\obj\Debug\ProjR5.exe' for writing: Access to the path 'C:\MyProj\ProjR5\ProjR5\obj\Debug\GenTagR5.exe' is denied. At first, VS2015 would give me the option to run the last successful build, but even that is no longer an option. After exhaustive internet searches on this problem, none of the dozen or so given solutions