Notepad++ Reload - This file has been modified by another program. Do you want to reload it?

---------------------------
Reload
---------------------------
"D:\file\data.csv"

This file has been modified by another program.
Do you want to reload it and lose the changes made in Notepad++?
---------------------------
Yes   No   
---------------------------

The above error in Notepad++ is seen when you are editing the same file in some other programs such as Microsoft Excel, Word, etc.

If you want what's in the Notepad++ tab and would not want to be overwritten as you do not want to lose it? simply click No and create a new copy of this file, else click Yes and the file will be refreshed in the tab.