Description of the Issue

When closing the program, Notepad++ has a problem saving the session file. Thereby causing old session data presented when the program is restarted.

Steps to Reproduce the Issue

1. Using v 8.5.4.
2. Simply close Notepad++
   2.1 Get the pop-up message.
3. Restart Notepad++.
   3.1 An old session is presented.

Expected Behavior

Notepad++ session closes successfully. And when restarting Notepad++ the previous session is restored.

Actual Behavior

Pop-up Window = Error of saving session file. "The old session file will be restored".

When restarting the application an old session is started.

Debug Information

Notepad++ v8.5.4 (64-bit)
Build time : Jun 17 2023 - 20:42:45
Path : C:\Program Files\Notepad++\notepad++.exe
Command Line :
Admin mode : OFF
Local Conf mode : OFF
Cloud Config : C:\Users\joe\Notepadd++ Session
OS Name : Windows 10 Pro (64-bit)
OS Version : 20H2
OS Build : 19042.1466
Current ANSI codepage : 1252
Plugins :
ComparePlugin (2.0.2)
mimeTools (2.9)
NppConverter (4.5)
NppExport (0.4)