Hello Mauro,
Thank you for visiting Microsoft Community.
I understand you're encountering error code 8004de44 when attempting to log into OneDrive.
This particular error typically relates to network connectivity or credential issues. As an interim solution, I would recommend accessing your files through the web browser by visiting onedrive.live.com. You may navigate to "My Files" > "Personal Vault" to verify whether your documents are accessible there.
Regarding the OneDrive application on Windows, I suggest clearing your credential information before attempting to log in again. Please click the Start menu, search for "Credential Manager," and remove any Windows credentials associated with your OneDrive account. Afterward, restart the OneDrive application and attempt to sign in once more. Additionally, you might consider switching to an alternative network environment, such as a mobile hotspot, to determine if the issue persists.
I hope this guidance proves helpful. Should you experience any updates or progress, please don't hesitate to share them with me.
Best regards,
Huy-K | Microsoft Community Support Specialist