I'm having the issue still, even when I have Settings backup set to on. OneDrive app is connected and functional. Backup goes to 99%, then after a minute or less, hits 100% and immediately spits out an error. I don't think I've had a successful-reported backup for many months now... it no longer reports when the last successful backup was. I have not performed a hard reset and don't plan on doing so, since I have some apps that are no longer in the Store.
Phone is Nokia Lumia 928, on WP8.1 dev preview, Black firmware (thank Verizon). OS version: 8.10.14219.341
Things I've tried (each attempt I've restarted the phone and deleted the backup beforehand as well):
- uninstalled Live Lock Screen BETA
- uninstalled Tetra Lockscreen
- removed Start Screen background
- Set lock screen background to Bing, then to the default photo, then to another standard photo.
- Unchecked "theme" in Sync My Settings
- Turned off Kids Corner
- "Turned off" Apps corner (via removing all apps)
- I live in the US, my region is set to US, it hasn't changed otherwise, etc.
- Turned off text message backup
Results:
app backup off: 0 MB (shows up in OneDrive website though)
With app backup on: ~88MB (shows up in OneDrive website as well)
It appears apps aren't the issue, so what other system-level things are there to do?