Didn’t work here. Anyway, thanks for your input.

i’ll try the suggestion. i’ll comeback with review after try it. thanks for sharing, sir 🙂

A really interesting solution. Thank you for sharing it with us. 🙂

I have solved this problem on my phone (Lumia 735
running latest Denim 8.1, update 2), and I think my solution is not
represented anywhere else online (that I can find), so I hope my writing
it out here will help others. Background: For weeks I could not complete
a phone backup, always getting stuck at 98% (or less). I read all the
info I could find in online forums, and then tried all the suggestions.
Despite it working for some people, it did not work for me to delete my
existing backup from OneDrive (whether deleting from the phone or going
online), nor to change the lock screen photo, nor turning off text backups, nor
any of the other “stand on your head, face east while doing a soft
reset” techniques mentioned in the forums. No matter in what order
or combination I tried the suggested fixes, just like many other people my backups
still always got stuck at 98% (and despite new backups being registered in
OneDrive I never felt sure they were complete or would fully work if I needed
to restore my phone because I always got the backup error telling me to
“try again later”). Solution: it turned out my Cortana had
gotten somehow corrupted (which I noticed when I tried but couldn’t add new
reminders). So to fix Cortana: 1) I turned off Cortana in settings (which
requires re-booting the phone), and then before turning Cortana back on 2) I
deleted its caches, both on phone and in cloud. Although you’ll have to
set up Cortana’s “notebook” (and MSN service favorites) all over
again that’s not really a big deal (and MUCH easier than doing a hard
reset!!). Once I’d re-setup Cortana I re-booted once more for good
measure and then tried to backup the phone. It worked on the first
try 🙂