Even if you delete a note, close it, or lose your entire hard drive, you can recover any version of any sticky note from the last 30–60 days. The notes are saved as hidden JSON files inside %LocalAppData%\Packages\Microsoft.MicrosoftStickyNotes_8wekyb3d8bbwe\LocalState\ and synced to your Microsoft Account's Outlook.com "Notes" folder.
When you download/install the correct version (the Microsoft Sticky Notes app, not the old Windows 7 gadget), you unlock this specific deep capability: download sticky notes - microsoft windows 10
Here is the you are likely missing or trying to unlock, broken down by what people usually mean when they search for that phrase. The Deep Feature: Cross-Device Sync via Microsoft Account (Not Local Backup) The deepest, most valuable (and often hidden) feature of the Windows 10 Sticky Notes isn't the notes themselves—it's the cloud-backed, time-traveling sync engine . Even if you delete a note, close it,
This is a nuanced query because in the traditional sense (like an .exe or .msi file from a website). Instead, it’s a built-in inbox app that is part of the OS, but it’s also updated via the Microsoft Store. The Deep Feature: Cross-Device Sync via Microsoft Account
Feed-based Note History & Timeline Restoration