Win 10 System Restore Fail 0x80070091

Question:

Below about says it all. I tried SysRes from two points, both with same failure.

System Restore did not complete successfully. Your computer's system files and
settings were not changed.
Details:
System Restore failed while restoring the directory from the restore point.
Source: AppxStaging
Destination: %ProgramFiles%\WindowsApps
An unspecified error occurred during System Restore. (0x80070091)

The two attempts were from: choose a different restore point>show more restore points type Backup. I really need this function to work. Any solutions out there?

Answer:

Renaming folder WindowsApps, reboot the system and try a system restore should cure the issue.

1.下载一个win10的iso镜像文件（官方原版的）
2.用ultraiso将镜像写入U盘(方法自己百度)
3.利用BIOS提供的启动顺序切换，从U盘启动，耐心等待
4.选择完语言下一步，第二个画面左下角，点“修复计算机(R)"，点“疑难解答”，点“命令行提示符”
  依次敲入命令：
  c:
  cd "Program Files"
  md "WindowsApps-"
  xcopy "WindowsApps" "WindowsApps-" /s /e /y /h
  rd "WindowsApps"
  关闭命令行窗口，点“疑难解答”，点“系统还原”，再执行就OK了。

I've described a solution here Windows 10 Version 1607: System restore error 0x80070091 [Fix].

Addendum: It seems that the issue has been fixed in Windows 10 Creators Update. And there is a batch file to fix the issue. Further details may be found here:

Windows 10: News about System restore error 0x80070091

from:https://answers.microsoft.com/en-us/windows/forum/windows_10-update/win-10-system-restore-fail-0x80070091/7f690ec3-a3da-4c14-90fd-3eb0ba83f4ac

巴特西

Win 10 System Restore Fail 0x80070091

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