did not worked to me , the solution was to save the code again after each modification with a new name as for example arq1.ce at once arq2.c to be able to compile and run, the problem does not have any relation with the anti-virus so you can keep it active, seems that the project folders are for to save the codes after each modification with a new name to keep the historical evolution of the project, so the IDE does not allow to save the file after modification overwriting an existing file