在任何正常的日子里，您都会发现您的系统运行良好。它启动正常，您可以正常安装所需的应用程序。但是，有时，它的行为可能会出乎意料。例如，当您唤醒计算机时，您可能会看到屏幕上出现以下错误消息的弹出窗口。

LogonUI.exe – 应用程序错误

The exception Breakpoint. A breakpoint has been reached. (0x80000003) occurred in the application location 0x00007FFC7F84C4D7.

LogonUI.exe是一个Windows程序，负责您在登录屏幕上看到的界面。只有当用户输入与欢迎界面关联的正确密码和帐户用户名时，它才允许 PC 启动。它是Windows的重要组成部分，但经常会导致上述问题。这个错误的原因不是单一的，而是多重的。例如，硬盘故障、RAM模块问题、数据线故障、电源单元无法为硬盘提供适当的电压或电流、用户配置文件损坏、系统文件损坏和更多的。不过，您可以全部修复它们。

1]运行DISM修复系统修复^{(1] Run DISM to repair System Repair)}

DISM工具可以帮助您修复一些Windows损坏错误，例如Windows 10中的LogonUI.exe 应用程序错误^{(LogonUI.exe Application Error)}。因此，在Advanced Startup Options中启动，访问命令提示符^{(Command Prompt)}，然后运行 ​​DISM 以修复 Windows 系统映像。^{(Run DISM to repair Windows System Image.)}或者，您可以在安全模式下启动^{(boot in Safe Mode)}访问命令提示符，然后运行​​DISM。

2]运行检查磁盘^{(2] Run Check Disk)}

在Advanced Startup Options中启动，然后访问并打开命令提示符并运行以下命令：

chkdsk /r

如果上述解决方案无法解决问题，请尝试下一个解决方案。

3]禁用显卡适配器^{(3] Disable Graphic Card Adapter)}

如果您的图形适配器存在任何临时问题，也会发生LogonUI错误。^(LogonUI)要解决此错误，请尝试在安全模式下^{(Safe Mode)}禁用图形适配器，然后在正常模式下更新并启用它。

4]在干净启动状态下进行故障排除^{(4]  Troubleshoot in Clean Boot State)}

使用最少的驱动程序和启动程序集执行干净启动^(Boot)以启动Windows。此过程有助于消除安装程序或更新或在Windows 10中运行程序时发生的软件冲突。您可以通过执行干净启动^{(performing a Clean Boot)}来解决问题。

如果没有任何帮助，请检查 事件查看器中的错误日志，看看它是否为您提供了工作方向。^{(If nothing helps check the error log in Event Viewer and see if it gives you a direction to work on.)}

LogonUI.exe Application error on startup in Windows 11/10

On any normal day, you will find yoυr system working well. It boots fine, and you can install desired apps normally. Howeνеr, sometimes, it can behave unexpectedly. For example, you may see a pop-up with the following error message appearing on your screen when you wake up your cоmputer.

LogonUI.exe – Application Error

The exception Breakpoint. A breakpoint has been reached. (0x80000003) occurred in the application location 0x00007FFC7F84C4D7.

LogonUI.exe is a Windows program which is responsible for the interface you see on the login screen. It allows a PC to start only when a user enters the correct password and account username associated with the welcome interface. It is an important part of Windows, but often causes problems such as the one described above. The causative agent of this error is not single but multiple. For instance, the failure of the hard disk, the problems with the RAM modules, the faulty data cables, the power supply unit not able to supply proper voltage or current to the hard disks, corruption of the user profile, corruption of system files and more. Nevertheless, you can repair them all.

1] Run DISM to repair System Repair

The DISM tool may help you to fix some Windows corruption errors such as LogonUI.exe Application Error in Windows 10. So boot in Advanced Startup Options, access the Command Prompt and then Run DISM to repair Windows System Image. Alternatively, you may boot in Safe Mode access the command prompt and then run DISM.

2] Run Check Disk

Boot in Advanced Startup Options, and then access and open a command prompt and run the following command:

chkdsk /r

If the above solution fails to resolve the issue,  try the next solution.

3] Disable Graphic Card Adapter

The LogonUI error can also occur if there’s any temporary issue with your graphics adapter. To troubleshoot this error, try disabling the graphics adapter in Safe Mode, and then update and enable it normal mode.

4]  Troubleshoot in Clean Boot State

A Clean Boot is performed to start Windows by using a minimal set of drivers and startup programs. This process is beneficial in a way that it helps eliminate software conflicts that occur when you install a program or an update or when you run a program in Windows 10. You may troubleshoot the problem by performing a Clean Boot.

If nothing helps check the error log in Event Viewer and see if it gives you a direction to work on.

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