MC1269863 — OneDrive and SharePoint: Undo and Redo for PDF annotations on OneDrive for web

Undo and Redo support for PDF annotations in OneDrive and SharePoint on the web will roll out worldwide in April 2026. Users can undo/redo ink, highlights, and text via keyboard shortcuts or toolbar buttons. The feature is enabled by default, requires no admin action, and improves annotation editing.