Illustrator does not save changes to an already created document.

[Caroline França]

I need super help.

I'm having a problem with my Illustrator. I use version 26.1, but this problem has already happened on another version and also on another computer. When I open some file created inside illustrator and I go to save it (ctrl + s) after making some changes, it doesn't know. Illustrator loads the save and shows as save complete (100%), after that I close the document. But when I go to open the document again, the document appears unchanged. I don't know how to solve this, but it's hurting me a lot, because sometimes I make a lot of changes in a single document, and I end up having to do it all over again.

Can anyone help me?

[Ton Frederiks]

Where do you save them? Desktop, server, cloud service folder?

[Caroline França]

In a folder on your computer that syncs with the cloud.

[Ton Frederiks]

What kind of cloud sync service folder? Adobe Creative Cloud Files folder? Something  else?

Does first saving on your desktop and copy the result to that folder work?

[Monika Gause]

In the Illustrator preferences try and turn off "Save in background"

[chanaart]

I am trying to re do the same. Can you send more information about the system?