A Microsoft file hosting and synchronization service.
Thanks for checking. Since the browser also rejects the upload, this suggests a OneDrive account or storage issue.
Please try uploading directly into My files, outside any shared folder. If it still fails despite showing 0.7 TB free, contact Microsoft Support here: https://support.microsoft.com/home/contact
Enter “OneDrive storage quota incorrect” >> Get Help >> Contact Support. Include both screenshots and ask them to investigate the difference between your available storage and the upload restriction.
Keep the desktop copy of your document safe while this is being checked.