Windows 提供内置备份功能，可定期备份文件并在需要时恢复它们。备份可能会失败，在这种情况下，报告的错误代码是 0x8078011E。完整的信息包括——

Windows Backup failed to get an exclusive lock on the EFI system partition (ESP), Access is denied. Error code 0x8078011E.

该消息还分享了一个可能的原因：有另一个应用程序使用ESP上的文件。这篇文章将指导您如何解决问题。

Windows 备份失败，错误代码 0x8078011E

Windows 备份^{(Windows Backup)}失败，错误^(Error)代码 0x8078011E

重新启动计算机然后重试总是一个好主意，以防第三方程序陷入循环。重新启动将删除锁定并允许备份完成该过程。

现在您应该对EFI 有所^(EFI)了解。它是为存储加载程序而创建的一小部分，并存储了系统启动期间固件使用的应用程序。这对Windows^(Windows)中的所有用户都是隐藏的，只能通过磁盘管理工具看到。Windows 备份^{(Windows Backup)}不是文件备份系统，而是备份启动和运行Windows所需的一切。

这清除了，发生错误的主要原因是因为另一个安全软件阻止了访问。这不是错误，但这是设计使然。大多数安全软件会限制其他工具的任何读取或写入访问，在这种情况下，会限制备份系统。

因此，如果您有阻止此类访问的软件，您可以暂时禁用它或为Windows 备份^{(Windows Backup)}添加例外。暂时禁用它并手动运行备份将确保第三方软件没有障碍，并且它将完成而没有任何错误。

一些报告的导致问题的软件是Avast、ESET、趋势科技^{(Trend Micro)}和AVG。这些应用程序持续扫描EFI系统分区中的文件。您可以将它们添加到异常中，这样它们就不会扫描，因此它不会被使用。以下列表来自官方ESET论坛。

DeviceHarddiskVolume(%number%)EFIMicrosoftBootBCD

DeviceHarddiskVolume(%number%)EFIMicrosoftBootBCD.LOG

DeviceHarddiskVolume(%number%)EFIMicrosoftBoot ootmgfw.efi

\?GLOBALROOTDeviceHarddiskVolume(%number%)EFIMicrosoftBootBCD

\?GLOBALROOTDeviceHarddiskVolume(%number%)EFIMicrosoftBootBCD.LOG

\?GLOBALROOTDeviceHarddiskVolume(%number%)EFIMicrosoftBoot ootmgfw.efi

```
%WINDIR%\system32\winload.efi
```

干净启动有帮助吗？

您可以干净启动进入^{(clean boot into Windows)}仅允许Windows 服务^(Services)的 Windows 。由于没有第三方应用程序，Windows备份完成该过程的机会更高。它还将确认问题是由于第三方软件而发生的。

请注意，用户不应手动删除或修改此分区。这可能会导致计算机根本无法启动。

Windows Backup failed, Error code 0x8078011E

Windows offers a built-in backup feature to periodiсally take your files’ baсkup and restore them when needed. It may so happen that the backup may fail, and at one such occurrence reported error code is 0x8078011E. The full messagе includes—

Windows Backup failed to get an exclusive lock on the EFI system partition (ESP), Access is denied. Error code 0x8078011E.

The message also shares a probable reason: There is another application using files on the ESP. This post will guide you on how you can resolve the problem.

Restarting the computer and then trying again is always a good idea in case the third-party program is stuck in a loop. A restart will remove the lock and allow backup to complete the process.

Now you should know a bit about EFI. It is a small portion created to store loaders, and applications used by the firmware at the system during start-up are stored. This is hidden for all users in Windows and can only be seen through disk management tools. Windows Backup is not a file backup system but instead backs up everything needed to boot and run Windows.

That cleared, the primary reason why the error occurs because another security software is blocking the access. It’s not a fault, but that’s by design. Most of the security software will restrict any read or write access by other tools and, in this case, the backup system.

So if you have such software that blocks such access, you can either temporarily disable it or add an exception for the Windows Backup. Disabling it temporarily and running the backup manually will ensure the third-party software makes no obstruction, and it will complete without any error.

Some reported software that causes the problem are Avast, ESET, Trend Micro, and AVG. These applications continuously scan the files at the EFI system partition. You can add them to exception, so they don’t scan, and hence it will not be in use. The below-mentioned list is from the official ESET forum.

\Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\BCD

\Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\BCD.LOG

\Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\bootmgfw.efi

\\?\GLOBALROOT\Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\BCD

\\?\GLOBALROOT\Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\BCD.LOG

\\?\GLOBALROOT\Device\HarddiskVolume(%number%)\EFI\Microsoft\Boot\bootmgfw.efi

```
%WINDIR%\system32\winload.efi
```

Does Clean Boot help?

You can clean boot into Windows where only Windows Services are allowed. Since there is no third-party application, the chances of Windows backup to complete the process is higher. It will also confirm that the problem is occurring because of third-party software.

Be aware that this partition should not be manually deleted or modified by the user. It can result in a state where the computer does not boot at all.

晶刘

About the author

我是一名硬件工程师，拥有超过 10 年的 IOS 和 MacOS 系统工作经验。在过去的 5 年里，我也是一名夜班老师，并且自学了如何使用 Google Chrome。我在这两个领域的技能使我成为网站开发、图形设计或网络安全工作的完美人选。

Windows 备份失败，错误代码 0x8078011E

Windows 备份^{(Windows Backup)}失败，错误^(Error)代码 0x8078011E

干净启动有帮助吗？

Windows Backup failed, Error code 0x8078011E