The error message 0x80070005 simply means "Access is denied." What you will
have to check why it is being denied. It may be that some of the updates
unintentionally changed the folder/drive permission. Recheck them.
Everything should be find when your access authority is properly restored.

"Tinribs" <Tinribs@discussions.microsoft.com> wrote in message
news:CA6E1277-0A60-417B-9FFF-D545357788A1@microsoft.com...
> Gazza,
> I am having a similar problem with B/U on Vista.
>
> For the last 8 weeks or so, I have my computer set for an automatic backup
> every Sunday evening at 7pm. It was successful for the first 4 weeks and
> then I get the message:
> "Backup did not complete successfully. Incorrect function: 0x80070001"
> This is the 4th week I receive this error message. Do you understand what
> this error number means. It is similar to your error except for the last
> digit.
> Edward kelly
>
> "Gazza" wrote:
>
>> This is quite amazing. After 5 months of using the in-built backup
>> facility,
>> Vista suddenly decides that it is not going to be helpful anymore.
>> Everytime
>> I attempt a backup I am getting a a 0x80070005 error. This is stupid. I
>> have
>> over 1Tb of storage available to me so I shouldn't be getting this error.
>> I
>> have also attempted to backup to another external drive and the same
>> problem.
>>
>> Easy to solve I thought. I have spent the last 6 days on the Net trying
>> to
>> find a solution and there isn't one. I have chkdsk the drives, run
>> utility
>> programes and everything is saying the drives are ok.
>>
>> MS don't have an answer. Does anyone know what to do?