How to Fix Windows Backup Error Code 0x8078002a?


One of the most important things you can do to protect your files from Windows errors is to back them up. But when you try to make a backup, an error like 0x8078002A might show up. This error means that one of the backup files couldn’t be made because of a problem with the I/O device. This article will show you how to fix the Windows backup error code 0x8078002A.

Why Do We Get the Error 0x8078002A in Windows?

When this problem was looked into, it was found that this error could have been caused by many different things. Here is a short list of people who could be to blame for this problem:

Windows Backup Does Not Back Up the Locallow, Contacts, and Searches Folders

This error can also happen if Windows Backup is forced to back up files that are not on the computer. In this case, you can either ignore the message or use the Backup settings menu to remove the folders from the files and backup.

There’s a Problem With the Nvidia USB Enhanced Host Controller Interface (EHCI)

If your PC has an NVIDIA USB Enhanced Host Controller Interface (EHCI) chipset, it’s likely that it’s in conflict with a generic driver, which is what causes this error. If this happens to you, you can fix the problem by removing the Nvidia driver and letting the generic driver take over completely.

fix Windows backup error code 0x8078002A

The Backed-up Library Has Custom Folders

As it turns out, you might see this error if you are trying to back up a library that has custom folders under your user profile and you are trying to back up the library. If this is the case, you can fix the problem by either moving the library folder outside of the user profile path or telling the backup to ignore this folder.

Errors With the Hard Drive Stop the Process in Its Tracks

If the drive that Windows Backup is trying to back up has bad sectors or blocks, this utility should be able to fix most of the obvious problems that could be causing this.

How to Fix the Windows Backup Error Code 0x8078002a?

Try each of the fixes below one by one if you can’t make a new backup or use the one you already have on Windows. Since you already know what can lead to this kind of Windows error code, let’s take a closer look at the solutions:

1. Verify Windows Backup and Volume Shadow Copy

Certain services must be running in order for your backup to work. You should make sure that these basic needs are met. To find out what’s going on, please follow the steps below.

Step 1: Press Win + R to open the Run box, then type services.msc to get to the Services window.

Step 2: Scroll down until you find Volume Shadow Copy and double-click on it.

Step 3: Make sure that the status of the service is “Running” and that the startup type is “Automatic.” If it isn’t, click Start under Service status and expand the Startup type: list to choose Automatic.

Step 4: Click “Apply” and “OK” when you’re done making changes.

Step 5: You can check Windows Backup the same way you check Volume Shadow Copy. Still, find Windows Backup in the Services window and make sure its Service status is running in the same way. If it doesn’t, you can start it by clicking Start.

Step 6: Check to see if the Windows backup error code 0x8078002a has been fixed. If it hasn’t, please try to fix it again and again.

2. Format Your External Hard Disc

Another choice is to format your external hard drive. This method has been shown to work, so you can try it.

Step 1: Plug in your external hard drive and open File Explorer by pressing the Win + E keys.

Step 2: Right-click on the external hard drive when the window opens. Choose Format from the drop-down menu.

Step 3: Choose the type of file system and name your external drive in the “Volume label” box.

Step 4: Check the box next to “Quick Format,” click “Start,” and wait until the formatting is done.

Then you can check to see if you can fix the problem that caused the backup to fail. Most of the time, one of these two things will fix the mistake. If that keeps happening, you could try the steps below.

3. Use the External Drive’s System File Checker

If there are broken files or folders on the external disc drive, Windows might not be able to back up to it. You can see if any files or folders are broken by running the System File Checker utility program. Here’s how:

Step 1: Press Windows + X, then choose Windows Terminal.

Step 2: Click “Yes” when UAC asks if you want to open the terminal. By default, Windows PowerShell will open when you click this.

Step 3: Copy and paste the code sfc /scannow onto it, then press Enter.

Step 4: After the command line tool checks the integrity of files and folders, it will automatically fix them.

fix Windows backup error code 0x8078002A

Step 5: Most likely, this will be done in 10 to 15 minutes. Depending on how badly your system files and folders are damaged, the time range could be longer.

Step 6: You’ll get a message when the scanning is done to let you know.

Step 7: Close the terminal and then turn your computer back on.

Step 8: Sign back into your device and see if you can make system backups or use them.

4. Change the Windows Registry

Everything you do in Windows involves the Windows registry editor. So, you should also try to set up the registry if you get the error code 0x8078002A when making a system backup or restoring your PC to a stable state from a backup.

Microsoft says that Windows users can add an entry to the registry that forces the sector size to be emulated as only 4 KB. Before you make changes to the registry, make sure to create a restore point up until now. This will help you fix your Windows operating system if something else goes wrong and makes it not work right.

If you did make a copy of your system, you can force the disc size to a 4-KB sector size by doing the following:

Step 1: Press Windows + R to open the Run window.

Step 2: Without the quotes, type “Regedit” and press the OK button.

Step 3: Click Yes on the UAC window to give permission to access the registry.

Step 4: When the Registry Editor opens, copy and paste the following path into the address bar and hit Enter:


Step 5: Right-click anywhere on the right pane and select New > Multi-String Value.

Step 6: Change the name of the new entry to “ForcedPhysicalSectorSizeInBytes” and double-click on it.

Step 7: Copy *4095 and paste it into the Value field, then click the OK button.

Step 8: Leave the registry and turn on your Windows computer again.

Step 9: Sign back into your device and try to make a new backup without getting the same error.


You don’t have to do your backup plan. You can find something else to do. You can use a great backup tool like MiniTool ShadowMaker if you can’t fix your backup error. You can back up your system with MiniTool ShadowMaker with just one click. It lets you make a copy of your whole system drive, including the system partition, the system reserved partition, and the EFI system partition.

All data, like programs, drivers, computer settings, system files, and boot files, will be saved as an image. With this program, you can make an exact copy of your operating system, files and folders, discs, and partitions. It also lets you make a Windows 10 recovery disc (CD/DVD or USB drive) that can be used to restore Windows 10 under WinPE.

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