The configured project file:///Sudoku.gpr does not exist

I just am busy to try and recreate a program a program that I wrote years ago in GNAT Studio community in Visual Studio. that means all files should be the same as before only the .gpr file can differ. That was relay so. Visual Studio check the .gpr file also. Now my .gpr file correct I get the following error message:

The configured project file:///Sudoku.gpr does not exist. ada.project [Lin 1, Col 1].

My sudoku .gpr file is in the same directory as the start file of this project (sudoku.adb). Several times I encountered “Workbench”, I cannot create it, it seem that in several cases it has a crusial function.

Who can tell me, what I do wrong?

It’s hard to say only with this information, but the error message says Sudoku.gpr and you mention sudoku.gpr. Beware of case sensitivity between OS and different file-system kinds. I’d make sure everything follows the same casing.

Do you have multiple GPR files per chance? That error sounds like the one you get when you run gprbuild on a GPR file that has `with “Sodoku.gpr” but the two GPR files are not in the same directory. Not sure if this is your issue, but the first thing I thought of based on the error.

I think I found the problem. The window of the .grp file was open and selected.

The problem was

the difference between the way that GNAT Studio was working and the way it is within the Visual Studio code, for instance the command Run and Debug if you have the .gpr open and selected.