Windows 7. How to diagnose 0x80070002 error.

Question

Hi There
I'm having trouble tracking down the cause of this error when I try to setup a backup. I need help. I get the error when I open Backup and Restore and choose Set up Backup. If I choose my backup location (in this case a SanDisk, though a network drive yields the same error), click next, Allow Windows to choose the files, click next, click Save Settings and Run Backup, I immediately receive the 0x80070002 error (The system cannot find the file specified), as if Backup cannot find the location where it will save the specified settings. No error is subsequently found in the Event Log.
I can do a full system backup without problem.
I was having the same problem before upgrading from Vista to Windows7 (one of the reasons I chose to upgrade).
I'm looking for a solution or some help diagnosing this problem. I really dont want to do a full system backup every day.
Thanks

Answer 1

Offline follow-up with Phillip revealed a problem with registering the scheduled task for backup which causes the Backup Configuration to fail. We have a couple of reports of this issue from users who upgraded from Vista to Win7.
We are sorry for the incovenience. Deleting Windows Backup scheduled tasks and then running backup again should solve the issue. Following steps describe how:
1. Launch Task Scheduler
2. Navigate to "Task Scheduler Library"\Microsoft\Windows\WindowsBackup
3. Delete tasks AutomaticBackup and Windows Backup Monitor
4. Retry configuring Backup.
It is possible that the tasks cannot be seen via the task scheduler UI. In that case:
1. Launch regedit
2. Delete the following keys:
       HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Windows\WindowsBackup\ Windows Backup Monitor
       HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Windows\WindowsBackup\ AutomaticBackup
3. Retry Backup Configuration.
Thanks,
Sankalp [MSFT]