How to stop Windows from auto-saving to AppData

[rmirani]

Hi everyone,

I have an application that for some reason lets Windows automatically store a backup file to C:\Users\Username\AppData\Local
This happens every 5 minutes or so.
Now, in principle this shouldn't be a problem, but in rare cases memory use for this application can be something around 10GB.
In this case the program will freeze for about 30 seconds every 5 minutes to perform the save.
I'm not sure why these auto-saves are being performed, because from what I can tell, none of my other applications seem to do this.
The application is written in C++ in Visual Studio 2017.
Is there some setting that prompts these saves, or some other way or preventing them?

Thank you in advance.

[Steve R Jones]

I would assume that the Application itself is doing the save. It would be the only app that has a vested interest in protecting you.

[rmirani]

Ok, I think that I figured it out.
It appears that these files are created by Windows Restart Manager.

This is because in CMyProgrammApp::CMyProgrammApp() the following flag is set:

m_dwRestartManagerSupportFlags = AFX_RESTART_MANAGER_SUPPORT_ALL_ASPECTS;

By changing this to

m_dwRestartManagerSupportFlags = AFX_RESTART_MANAGER_SUPPORT_NO_AUTOSAVE;

the auto-saving appears to now have stopped.
I've had to manually make this change.
I can't find anything under Tools or "Project->MyProject Properties".

If anyone knows where this is located in the menu for Visual Studio then please let me know.

[2kaud]

For MFC, see

https://docs.microsoft.com/en-us/cpp...t?view=vs-2019
https://docs.microsoft.com/en-us/cpp...9#initinstance (the section on restart flags)

and for info about the Restart Manager see https://docs.microsoft.com/en-us/win...manager-portal and links.

[wolle]

If anyone knows where this is located in the menu for Visual Studio then please let me know.

It seems Restart Manager support in MFC is selected in the application wizard.

https://mariusbancila.ro/blog/2009/0...anager-in-mfc/