Windows 7 Backup Error 0x8078012D

I have been able to work on this fix and it worked.

• Click Start.
• Type Services in the Start Search.
• SELECT "VIEW LOCAL SERVICES" under CONTROL PANEL
• In the Services Windows search for Volume Shadow Copy in the list.
• Right click on the Service.
• Click on Properties.
• Select the Startup Type to Manual.
• MAKE SURE UNDER THE "STATUS COLUMN" that it is "STARTED" (can be done by clicking on the "Start Button" when you are in the properties interface)
• Click OK.
• Now repeat the same for Windows Backup service.

This has certainly worked for me, the guys at Microsoft might need to visit this page.

You may have to continually go into this area and "Start" the volume shodow copy as it seems to return to blank or stopped. There is a warning under the description that says if this service is stopped, shadow copies will be unavailable for backup and the backup may fail.

As Windows has a few things running automatically by default (System Restore - seems to be at 2 am every day on mine, Windows update - every day at 2 am, Defrag, etc), these could also interfere with the backup service as they can make changes to the system image, so I have rescheduled the services to run at different times and different days, to each other AND to the scheduled Backup also, ensure your antivirus is not doing a scan.

In addition if you are like me and want to keep all of your emails (pst files) in outlook in a backup, you should have Outlook shut down during the backup process, as it "may" interfere with the process, as it can make changes when a scheduled search for emails occurs, and as Windows can be a bit finiky, its best to reduce all possible causes of problems.

Do not have anything open and have minimal programs running in background or (at startup) look in msconfig and select startup tag, de-select unnesessary programs, this will also speed up your bootup.

Here the solution for Windows 7 Backup Error 0x8078012D, you get this error during the Backup after you have rearranged the C drive in large by the partition resize,, as a solution, you must assign a new Computer name if you want to keep the previous Backups, restart the computer after the name change back, then return the Backup restart. You can just type your external HD format and create a new Backup, but then you're lost, all the other and previous Backups to you the choice what decision you take.

I am going to try this as I have indeed changed my partition size. If you are right I must say that the built-in backup function in Windows 7 is very badly programmed and not something to expect from Microsoft.

Now I am using Allway Sync to backup on file level. Not the best solution, but at least a solution.

Let me know if this worked for you

Glennovich said:

I am going to try this as I have indeed changed my partition size. If you are right I must say that the built-in backup function in Windows 7 is very badly programmed and not something to expect from Microsoft.

Now I am using Allway Sync to backup on file level. Not the best solution, but at least a solution.

KeithAus said:

You may have to continually go into this area and "Start" the volume shodow copy as it seems to return to blank or stopped. There is a warning under the description that says if this service is stopped, shadow copies will be unavailable for backup and the backup may fail.

That's working as designed. It starts up only when needed and shuts down after you close the GUI or it finishes the backup/restore process. You'll see this in event viewer or the first time you go into backup and restore it takes a bit as this service is starting. Then if you go out and come back in quickly, your first GUI request will now be much faster.

BepaComputers said:

Let me know if this worked for you

Glennovich said:

I am going to try this as I have indeed changed my partition size. If you are right I must say that the built-in backup function in Windows 7 is very badly programmed and not something to expect from Microsoft.

Now I am using Allway Sync to backup on file level. Not the best solution, but at least a solution.

It was worth a try, but it did not work out as I am still having the same issues. It looks like a complete re-install of Windows might be needed in order to get this fixed. I have also tried replacing the external backup drive, but the error is always the same.

in my os(win 7 home premium x64) it was due to shark007 i installed already.
i did this following:
1- chkdsk /b (after this i found the problem is due to shark007 codec.)
2- uninstall shark007 codec
the problem was solved.