Unable to Backup Files with Error 800700B7

[Guest]

I am unable to backup anything in Windows Vista Ultimate. I am using the
Backup Files function in Vista to backup files to a local network location.
I can browse and find the location (e.g., "\\server\folder\") but when I
click <Next>, I get the error message…

The network share could not be accessed for the following reason:
Cannot create a file when that file already exists. (0x800700B7)
Please ensure that the network location is valid.

There was no file there already and this error has occurred from the very
first try. However, folders are being created in the selected folder with
names like {5C0AF261-393F-4FC6-9496-2576C5A3772E}. All help is appreciated.

 

[Jill Zoeller [MSFT]]

Are you backing up to a NAS device?

 

[Guest]

Yes, I am trying to backup to a NAS device.

Are you backing up to a NAS device?

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[Jill Zoeller [MSFT]]

That's what I thought. Please see our FAQ at
http://blogs.technet.com/filecab/pages/file-backup-in-windows-vista-faq.aspx.
We cover this in the last question.

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[Guest]

That article seems to address my problem. So, apparently my NAS device is
running a version of SAMBA that is too old and there is nothing I can do
until the manufacturer upgrades SAMBA. Correct? I have e-mailed the
manufacturer about this issue asking them to upgrade SAMBA.

Thanks!

 

[Jill Zoeller [MSFT]]

That's correct. I'd be interested in knowing about your hardware and SAMBA
version if you'll share it.

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[Guest]

QNAP TS-101 firmware v2.0.0.0105. I can't find the SAMBA version anywhere.
Otherwise, I am very happy with the TS-101.

 

[Guest]

The manufacturer of the TS-101 responded with SAMBA version 3.0.10. Since
Microsoft's recommendation is version 3.x, what next? QNAP said they are
going to look into this further too.

 

[Jill Zoeller [MSFT]]

I passed this along to our developer. We're going to try to get a device
that matches yours for testing. I can't give you an ETA on a
resolution...your best bet is to work with QNAP.

--
This posting is provided "AS IS" with no warranties, and confers no rights.

Want to learn more about Windows file and storage technologies? Visit our
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[Guest]

QNAP has notified me that they found the issue and are working to debug it.

 

[Guest]

Exactly the same problem here--

 

[Jill Zoeller [MSFT]]

Yep, see our FAQ at
http://blogs.technet.com/filecab/pages/file-backup-in-windows-vista-faq.aspx
and contact your NAS OEM for an updated version of SAMBA. If you would share
with me the NAS device model and SAMBA version, I can pass this along to our
developers.

 

[Guest]

I'm getting the same error message backing up to DVD's
Help??

 

[Jill Zoeller [MSFT]]

Bob, did you ever get this working?

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[Guest]

No Jill--I never did--
I'm simply trying to back up to DVD's but keep getting same error message-
Thanks for following up

 

[Jill Zoeller [MSFT]]

Bob, please zip and email me the contents of Windows\Logs\WindowsBackup and
\Windows\Logs\CompletePC. Use my address minus "online."


--
This posting is provided "AS IS" with no warranties, and confers no rights.

Want to learn more about Windows file and storage technologies? Visit our
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[Guest]

Jill-
When I get a chance soon I'll send the files you requested--
Thanks so much

 

[Jill Zoeller [MSFT]]

Please contact your NAS vendor for an updated version of SAMBA. I know we
tried to implement as many workarounds in the code as we could for these
issues, but some of them were impossible to work around.

What is your NAS device, by the way?

 

[Jill Zoeller [MSFT]]

The latest Samba is 3.x.x:
http://us3.samba.org/samba/history/samba-3.0.24.html. Backup must be able to
not only read/write/delete files but also set ACLs on them. We must protect
the backup file, and to do this, the SAMBA version must support this. If
there are bugs or other issues in the SAMBA code that don't allow us to set
ACLs, then we can't use that share as a target.

Give the latest version a try and see if that helps.

 

[Jill Zoeller [MSFT]]

On your Linux server, you need to create an account that is not root and
allow it full access (meaning read, write and most important change ACLs,
sometimes called all access) on the share and on the files.

Unfortunately I don't have instructions for doing this. NAS boxes usually
have a web UI that you can use.

When you can perform the following steps successfully from the command line,
then Backup should be able to use it as a target:

- net use with the account against the share
- create a file on the share and put some small data in it
- the owner of the file should be user used in net use
- change the ACL of the file using cacls.exe
- delete the file
- create a directory on the share
- the owner of the file should be user used in net use
- change the ACL of the directory using cacls.exe
- delete the directory

Backup does this programmatically to determine whether the account has the
necessary access.