As of a couple of days ago, I cannot save a PDF to OneDrive from within the Adobe app on my Android phone or my iPad. On both devices, I get the 'Error saving a copy of this document' pop-up. on 13 November, following the 12 November 2024 Windows Updates, OneDrive 'processed changes' for all of my many OneDrive files on my laptop. It seems to be since then that I can't save documents using the mobile apps. I presume that the OneDrive API is at fault. (I can save files to DropBox using the mobile app on my phone). The version on my phone is 24.11.1.36333. On my iPad, I have version 24.10.00 (20241023.121212), which was last updated on 29 October.