Can't backup - Invalid window handle (Error code: 0x80070578)

On a Windows 7 laptop, I noticed that Windows Backup hadn't backed up anything in about a year since the USB drive it was backing up to was full. (I thought Windows 7 would delete old backups if the backup drive was full, but that's another issue.)

So I deleted all the backups off the USB drive and told Windows 7 to do a backup. But the backup failed with an "Invalid window handle" error (error code: 0x80070578). It gave me options to "Try to run backup again" and "Change backup settings". I tried both options and re-tried the backup, but the backup kept failing with the "Invalid window handle" error. I also re-formatted the USB drive (as NTFS) and also restarted Windows, and the backup still fails with the same "Invalid window handle" error.

Any idea how to fix this?

andrew129260 said:

Format the drive in computer. Then go into backup and restore. Click change settings and wait for windows backup to start. Click the drive again and follow the prompts.

I just tried all that and unfortunately the backup still failed with the "Invalid window handle" error.

I tried both of the methods and unfortunately still get the "Invalid window handle" error.

Have you tried resetting windows backup to default?

Backup User and System Files - Reset to Default Configuration

derekimo said:

Have you tried resetting windows backup to default?

Backup User and System Files - Reset to Default Configuration

I just tried that, and once again got the Invalid window handle.

I got a "Windows Resource Protection found corrupt files but was unable to fix some of them."

I attached my sfcdetails.txt file.