Windows 7: Backup and Restore (Error Code: 0x81000019)

Hi,

a. Are you trying to backup to the external hard drive or the internal drive?

b. Were you able to use windows backup feature without any issue earlier?

c. Do you have any third-party backup utility installed on your computer?

Try the below methods one by one and check if this helps.

Method 1:

1. Click on start button, type diskmgmt.msc and press enter.
2. Now right-click on C: partition and select Mark partition as active (By default C: drive has windows installed on it. If you have installed windows 7 on any other driver then, select that partition).
3. Close Disk management.

Method 2: Check if the issue persists in clean boot state.

Putting your system in clean boot state helps in identifying if any third party applications or startup items are causing the issue. If yes, you may go ahead and disable or uninstall the

same.

Follow the below steps to put your computer in clean boot state:

1. Log on to the computer by using an account that has administrator rights.
2. Click Start, type msconfig.exe in the Start Search box, and then press ENTER to start the System Configuration Utility. If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
3. On the General tab, click Selective Startup, and then click to clear the Load startup items check box. (The Use Original Boot.ini check box is unavailable.)
4. On the Services tab, click to select the Hide all Microsoft services check box, and then click Disable all.
5. Click OK, and then click Restart.

The above steps would put the computer in clean boot state.

Refer the link below for more details on how to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7:

How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7

http://support.microsoft.com/kb/929135

After you’ve finished troubleshooting, follow these steps to reset the computer to start as usual:

1. Click Start, type msconfig.exe in the Start Search box, and then press ENTER. If you are prompted for an administrator password or for confirmation, type your password, or click Continue.
2. On the General tab, click the Normal Startup option, and then click OK.
3. When you are prompted to restart the computer, click Restart.

You may also temporarily disable security software’s and check if the issue persists. Make sure to enable those security software's on the computer after checking.

http://windows.microsoft.com/en-us/windows7/Turn-Windows-Firewall-on-or-off

http://windows.microsoft.com/en-US/windows7/Disable-antivirus-software

Hope this information is helpful.

Umesh P - Microsoft Support