Explorer crash when right‑clicking inside Windows Libraries (caused by KuShellExtension)
Posted: 16 Jan 2026, 00:15
Hi,
I’ve run into a repeatable Explorer.exe crash and tracked it down to AllDup’s shell extension.
Whenever I right‑click inside a Windows Library (Documents, Pictures, etc.), Explorer crashes instantly.
Right‑clicking the same folders outside the Library works fine.
After some testing with ShellExView, I found that disabling this extension fixes the problem:
Steps to reproduce:
Disabling the extension makes the crash disappear completely.
Just wanted to report it in case others hit the same issue or if it can be fixed in a future update.
Thanks!
I’ve run into a repeatable Explorer.exe crash and tracked it down to AllDup’s shell extension.
Whenever I right‑click inside a Windows Library (Documents, Pictures, etc.), Explorer crashes instantly.
Right‑clicking the same folders outside the Library works fine.
After some testing with ShellExView, I found that disabling this extension fixes the problem:
Code: Select all
KuShellExtension-{72F6A03F-7B17-4E65-AE37-666FC9024FA2}
C:\ProgramData\AllDup\KuShellExtension64.dll
Context Menu Handler
Targets: LibraryFolder, LibraryFolder\background, .library-ms, Directory, Drive
- Enable KuShellExtension (default install).
- Open any Windows Library.
- Right‑click on a folder or on the background.
- Explorer.exe crashes.
Disabling the extension makes the crash disappear completely.
Just wanted to report it in case others hit the same issue or if it can be fixed in a future update.
Thanks!