I am not sure if there was an update; my organisation is in control of my Windows updating. I did not install any new software when this happened, seems abit weird. I have checked fluent and the code seems to be working now when I lunch it through MS VS 2022 envorment and not use the build-in compiler.
C:\>set PATH
Path=C:\Program Files (x86)\Intel\oneAPI\tbb\latest\redist\intel64\vc_mt\;C:\Program Files (x86)\Intel\oneAPI\tbb\latest\redist\ia32\vc_mt\;C:\Program Files (x86)\Intel\oneAPI\compiler\latest\windows\redist\intel64_win\compiler;C:\Program Files (x86)\Intel\oneAPI\compiler\latest\windows\redist\ia32_win\compiler;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\Program Files (x86)\Common Files\Intel\Shared Libraries\redist\ia32_win\mpirt;C:\Program Files (x86)\Common Files\Intel\Shared Libraries\redist\ia32_win\compiler;C:\Program Files (x86)\Common Files\Intel\Shared Libraries\redist\intel64_win\mpirt;C:\Program Files (x86)\Common Files\Intel\Shared Libraries\redist\intel64_win\compiler;C:\Program Files\Tecplot\Tecplot Chorus 2022 R1\bin;C:\Program Files\Tecplot\Tecplot 360 EX 2022 R1\bin;C:\Program Files\Microsoft MPI\Bin\;C:\Program Files\Python310\Scripts\;C:\Program Files\Python310\;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit\;C:\Program Files\NVIDIA Corporation\NVIDIA NvDLISR;C:\Program Files\dotnet\;C:\Program Files\Common Files\Autodesk Shared\;C:\Program Files\Microsoft SQL Server\150\Tools\Binn\;C:\Program Files\Common Files\Autodesk Shared\Advance\;C:\Program Files (x86)\Common Files\Autodesk Shared\Advance\;C:\Program Files\MATLAB\R2023b\bin;C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit\;C:\Users\f-madi-admin\AppData\Local\Microsoft\WindowsApps;C:\Users\f-madi-admin\.dotnet\tools
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC;.PY;.PYW