explorer continuously crashing without warning

[pplane10]

Before reporting your issue

• I have confirmed that this issue does not happen when ExplorerPatcher is not installed
• I do not have "register as shell extension" enabled
• I have tried my best to check existing issues

Repro ExplorerPatcher versions

Version: 26100.4946.69.6

Repro Windows Versions

Windows 11 25H2（26200.6584）x64 (after installed EP, I changed SKU from Education to PRO)

3rd party tweak software installed

No

Describe the bug

1.My network needs authentication. And before I install EP, explorer will automatically start browser when I log in. Since I installed EP 26100.4946.69.6, explorer never start browser after log in.
2.Then I enabled "register as shell extension"，but I didn't meet any crash problems for weeks.
3.When I use explorer normally(not after login), and explorer suddenly crashed and restarted continuously, and started a browser every restart. I used task manager to terminate the restart process, and manually start it later, it started normally, didn't crash and start browser anymore.
4.The next day it happend the same, but it didn't start browser that time, then I uninstalled EP immediately, and explorer can start browser normally.
5.Actually, it crashes without warning, but when it crashes, it may start the browser continuously

Expected outcome

It won't crash and restart when start a browser automatically after login or not

Actual outcome

I don't know the trigger of the problem, it crashes without warning and may keep launching the browser.

Additional info

It crashed many times for the same reason(0x00000505,kernelbase.dll),this is one of them, copy from event viewer.

源
Windows Explorer

摘要
已停止工作

日期
‎2026/‎1/‎22 18:32

状态
未报告

描述
错误的应用程序路径: C:\Windows\explorer.exe

问题签名
问题事件名称: APPCRASH
应用程序名: Explorer.EXE
应用程序版本: 10.0.26100.5074
应用程序时间戳: affdcb8f
故障模块名称: KERNELBASE.dll
故障模块版本: 10.0.26100.6584
故障模块时间戳: 0a9b38fe
异常代码: 00000505
异常偏移: 00000000000c66ca
OS 版本: 10.0.26200.2.0.0.256.48
区域设置 ID: 2052
其他信息 1: 0b8b
其他信息 2: 0b8b41017ef0703536134dc4886177c7
其他信息 3: a01e
其他信息 4: a01e8467c97e3835c57651f7afa01592

Crash Dumps

No response

Media

No response

[pyrates999]

In EP properties application, click on file explorer, untick register as shell extension and click restart file explorer in the bottom left corner.

Here's why not to enable it: https://github.com/valinet/ExplorerPatcher/wiki/Using-ExplorerPatcher-as-shell-extension

[pyrates999]

Also, install the latest updates for windows. Your windows updates are from September 2025: https://betawiki.net/wiki/Windows_11_build_26200.6584

[pplane10]

But even when I turned on the "register as shell extension" option, it never crashed for long time, until this happend. And this computer is in a very strict network，I do not have the authentication password.

[pplane10]

But anyway, I'll try to do what you've say.

[pplane10]

Or do you also see if the EP really involves a bug related to the kenrelbase.dll ?

[pyrates999]

Read the link I provided.