First,
make sure the device you are trying to access the OneDrive application is connected to the internet.

1. Restart the device: restarting the device can help reset the internet connection, which can increase speeds and resolve the issue
2. Check memory: if the device doesn’t have enough storage, some OneDrive files may not be able to save to the device
3. Check for updates: ensure the OneDrive app and device operating system are up-to-date
4. Check for compatibility: make sure the device operating system, OneDrive app, and versions are compatible with each other