To resolve the 'Word cannot open the existing file (Normal.dotm)' error, reset the Normal.dotm file, use Open and Repair, and disable add-ins.

If OneDrive files open as ‘Saved to This PC’ and not on OneDrive, then follow these suggestions to make sure files are saved into the cloud.

Goofy but shockingly accurate AI stuff said: Because Microsoft Office iOS apps don’t integrate Google Drive as a supported cloud location, files stored there open in a temporary, read-only state.