1. Windows Central Question's Avatar
    When I want to create back up , my device doing until 99% but after that writes that the upload was unsuccessful ,try it later . Anyone ?
    06-25-2016 12:16 PM
  2. Maurizio Troso's Avatar
    When I want to create back up , my device doing until 99% but after that writes that the upload was unsuccessful ,try it later . Anyone ?
    WHICH device?
    06-25-2016 12:21 PM
  3. RumoredNow's Avatar
    The usual solution is to log into OneDrive in a PC browser > click "Get more storage" in the left pane > click "Device backups" > remove the last backup for that device > resubmit a backup attempt.


    If you need additional help or have more questions or details to share, please join the site so you can reply in this thread. See this link for instructions on how to join Windows Central.
    06-25-2016 12:55 PM
  4. Meszaros Mate's Avatar
    Lumia 640 XL windows 8.1
    06-25-2016 01:02 PM
  5. Chintan Gohel's Avatar
    Lumia 640 XL windows 8.1
    try removing apps one by one until the backup succeeds. There might be an app in that list of apps for backup that is causing the issue - check internet stability too
    06-27-2016 08:26 AM
  6. Meszaros Mate's Avatar
    I will see ,thank you very much .
    Chintan Gohel likes this.
    06-28-2016 04:04 AM
  7. Meszaros Mate's Avatar
    It says 'unsuccessful back up. we can not able to establish a connection between OneDrive, please update your phone and try it later. But how can I update my for to windows 10 mobile , i will lost everything what I have now on 8.1 version ??
    06-30-2016 01:52 PM
  8. Chintan Gohel's Avatar
    It says 'unsuccessful back up. we can not able to establish a connection between OneDrive, please update your phone and try it later. But how can I update my for to windows 10 mobile , i will lost everything what I have now on 8.1 version ??
    What backup does is to remember which apps you have downloaded, your start layout, some of your settings and app data for some apps

    For backup of media like photos and music, you have to do that either by copying over to pc or uploading to onedrive

    Text and contacts are automatically backed up to your email account - so no worries there

    So just do the upgrade and don;t worry about backup once you've done the above
    07-01-2016 06:36 AM

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