The Last Backup Failed-errorOx 800403EF

I am no longer able to back up my files on Vista (Business 64bit). Error message says "The last backup failed" - refers to error Ox 800403EF - (which I can't find reference to anywhere) - and tells me to try again. I have retried many times over the past few weeks.

Please help.... Thank you.

Lets see if we can solve this.
Make a complete anti virus scan
Download and make an updated scan with malwarebytes.

If Ok
Make sure you have enough hard drive space. Either way report back.

Hello FluffyCat, and welcome to Vista Forums.

As a test, you might see if resetting Backup and Restore using the tutorial below may be able to allow you to create a backup afterwards.

http://www.vistax64.com/tutorials/160295-back-up-files-reset-last-backup-listing.html

Hope this helps,
Shawn

Hi richc46,

Thank you for trying to help. Did a complete antivirus scan (Norton 360) and some cookies were found and deleted. Dowloaded and scanned with Malwarebytes which found 3 incidents of Adware and deleted them.

Then I tried again to back-up, but to no avail - same error message comes up.

My free space is 449GB on C:drive/1.42GB on D:drive.



Thank you.

FluffyCat,

Did you reset backup as posted above to see if that would help?

Hello Brink,

Thanks for trying to help. I reset backup - and it took out date of last backup listing.

Tried again to backup files and same error message appeared.

Marilyn