Data error (cyclic redundancy check).(0x80070017)

This problem started last week when my automatic backup failed due to the Data error above.  It appears that this error is in an automatic update from Windows.  The last time the backup was successful was 7/23/12.   Whatever update was pushed after that date is apparently the culprit.  I need help in removing the error so my data can be backed up again.  It's due to be automatically backed up tomorrow morning (8-6-12). 

Question Info

Last updated November 7, 2019 Views 7,208 Applies to:


Method 1

Run the Chkdsk.exe tool to check the disk for errors

1.Click Start, type cmd in the Start Search box, right-click cmd in the Programs list, and then click Run as administrator. If you are prompted for an administrator password or confirmation, type your password, or click Continue.

2.At the command prompt, type Chkdsk /f, and then press ENTER.

3.Press Y when you are prompted to check the disk next time that the system restarts.

4.Close all applications, and then restart the computer.

Note During the restart process, Windows checks the disk for errors and then starts.

5. After the computer has restarted, install the updates again.


If Method 1 does not resolve this issue, try Method 2.

Method 2

Rename the Download folder.


1.Click Start, type notepad in the Start Search box, and then click notepad in the Programs list.

2.Copy the following commands, and then paste them into the Notepad file:


net stop wuauserv

CD %systemroot%\SoftwareDistribution

Ren Download Download.old

net start wuauserv

3.On the File menu, click Save as.

4. In the File name box, type rename.bat, and then click All Files (*.*) in the Save as type box.

5.Save the rename.bat file to the desktop.

6. Right-click the rename.bat file, and then click Run as administrator.

If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.

7.Try to install updates again.

Note When the updates are installed successfully, you can safely delete the rename.bat file.

UTC/GMT is 16:26 on Sunday, August 05, 2012

3 people were helped by this reply


Did this solve your problem?

Sorry this didn't help.

Great! Thanks for marking this as the answer.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this response?

Thanks for your feedback.