'Configure Viewer' changes are saved but not used until dialog is reopened.
Posted: 02.01.2026, 01:57
Severity: minor
Build: 939 64-bit donor
Also note that the help page is out of date.

Steps to Reproduce:
You will find that the change is saved but not recognised.
Work around:
So you need to revisit the 'Configure Viewer' dialogue screen, where you will see the item list is now sorted.
Then click 'Ok' again, and only now will it work and be recognised.
Thanks.
Build: 939 64-bit donor
Also note that the help page is out of date.
- https://freecommander.com/fchelpxe/en/Viewer.html
The image is out of date. It now has 2 tabs.

Steps to Reproduce:
- Go to:
Tools (menu) → Settings (menu) → View (tree) → Viewer (tree) → General (tab) → Viewer (button)
- Go to:
But all extension fields are probably affected by this, too.General (tab) → 'as Windows preview:' (field) - Add an extension (eg: '.json') to the start of the line.
.json
- Click 'Ok' button
- Click 'Apply' button
You will find that the change is saved but not recognised.
Work around:
So you need to revisit the 'Configure Viewer' dialogue screen, where you will see the item list is now sorted.
Then click 'Ok' again, and only now will it work and be recognised.
Thanks.