I am trying to rename a visual micro project , i am using visual studio 2017 . 
I am using the simple way :
1- rename the .ino file .
2- A windows appears saying that the solution and folder will be renamed , and it involves saving and closing the file ..etc .
3- It closes the project then shows a pop up error saying :
Unable To create a sketch folder With this name 'xxxx'   The process cannot access the file because it is being used by another process.

The antivirus is turned off , the folder is opened by another program . but it appears some process in visual studio is still accessing the folder ?!

by the way i tried the name process on another PC , it worked for multiple times , then the same error started appearing 

please help .