Fix context menu crashing

Fix context menu crashing.txt

Some Windows shell extensions will prevent OneCommander from opening the file/folder context menu. 

Incompatible context menu extensions that might cause crashing:
- Fast Explorer
- File Renamer Turbo
- Tim by QQ
- AcdSee Pica View or 
- HoneyView
- GeoSetter
- Cairo

These have to be uninstalled or disabled.

If you don't have any of those extensions:

Download ShellExView 
https://www.nirsoft.net/utils/shexview.html 
(scroll to "Download ShellExView for x64" near bottom of the page)

Run it and then check
Options>Hide All Microsoft Extensions, 
Sort by Type by clicking "Type" column header, and look for "Context Menu" in Type column, 
Disable one-by-one (or several at once) of "Context Menu" type, and each time check if OC can open context menu.

Once you find which context menu extension causes the crash, please report to support at onecommander.com

Note:
- Context menu extension might be handling one file type only, so make sure to test by right-clicking the same file
- Tip: If you have many context menu extensions (example 20), you can click first, shift+click 10th, and then disable all 10 at once, check if OC crashes, if yes, disable the same way 11-15; if not, enable 5-10, and so on, halving the results so it doesn't take many OneCommander restarts and to find the faulty extension faster

Nextcloud context menu handler	No	Context Menu	Windows Shell Context Menu Handler	3,0,0,47	NCContextMenu	Nextcloud GmbH	No	No	No	No	No	No	C:\Program Files\Nextcloud\NCContextMenu.dll	{BC6988AB-ACE2-4B81-84DC-DC34F9B24401}	19.03.2026 12:39:02	25.03.2026 19:01:53	No	AllFileSystemObjects	A	179.520	No		No	

Seems to be problematic.

I had the same issue. I tested it as you told.
Express-Zip was the issue for me. First, it blocked the copy overall (OC said its copy, but nothing happened) when I clicked right-click again, the OC broke.