I am unable to edit or modify the main.c program after closing and opening the PSoC creator 4.4.
I have been using PSoC creator 4.4 for the last 3 months.
I am facing this issue for the last 2 days.
Would anyone help me in addressing this issue?
Just a few guess's at your issue...
Creator locks all files from being edited if you are in Debugger mode. I suspect you are closing/opening Creator while in debugger mode. So, open Creator and exit debugging mode.
See this thread for similar issue:
Solved: Unlock file editing during debug in PSoC Creator? - Cypress Developer Community
Or, maybe you have main.c open in another text editor and Creator can't access it. Close the text editor and then open Creator.
Or, maybe you moved the files to another folder and Creator can't find them.
Or, maybe you archived the project and Creator can only view/build the files.
Or, you just found another Creator software bug.
I hope this helps.