I know this thread is old, but this problem is the closest I have been able to find on the site, and extremely similar to what I am experiencing...
PS: Hi, I'm Dravial, been watching you all for a while. Damn Brilliant, nice to meet your acquaintance.
So now then, I have been using Backup and Restore for a while, no problems. I was using it on my internal hdd, 2 TB, which I partitioned into four equal parts. On two of these parts, E: 'Media' and F: 'Storage', I made shared folders on the network/homegroup. I was keeping my backup on F: along with a number of other files, and it became almost full. Then along came the miracle of Black Friday and a $99 3 TB external drive. After fighting with it and getting it formatted properly to even allow backup and restore to work properly on it, I finally set up a shared folder so all my computers on my network would be able to back up to it, each in their own folder within the shared folder. At the same time, I took some of the shared items on E: and moved them to the new external hdd where they seemed better suited and accessible. Then I deleted everything on E:, or at least I tried...
I could not delete two folders here, even after reboot - stated "S1-587256-5342543-543543243" (I made the numbers up, as I do not remember EXACTLY, but that is what it 'resembled') was using it, and I needed admin permission to delete it, Right. OK, except... I AM ADMIN. So yeah, buggers to the lot of ya, I formatted the drive. I had everything I needed off of it, so I deleted it. Then when I try to run backup and restore, it completes, but with error 0x80070003 - Says it can not find two of the folders within the shared folder that used to be on E: - and believe me I looked at method 4 stated above, and already tried to do it three times now with the same results. And frankly, I do not have that hdd checked, or see a path to the files it is after anywhere in what is selected to be backed up...
I finally went and added the folders it so desperately wants back to E:, and now it backed up fine, even though they are empty. So I thought, Right, the're empty, you don't care if I delete them now. LOL@U. Oh yeah it does, I once again can not delete them. Seriously? Any thoughts as to why it wants them so bad? If I was not such a stickler for things to be right, I would leave them, but I hate having useless things cluttering up anything...
If I left anything out, just ask. My thanks in advance for any insights.
EDIT: Is it possible to just wipe Backup and Restore, and 'start over'? (Short of re-installing windows, I am not drinking the required amount of bourbon for that tonight!)