They are in Directory Opus, are normal ico.[Big Icon mode]
They are in Windows Explorer, are image [Big Icon mode]
The two screenshots seem to be showing different files?
Please zip and attach one of the icons that doesn’t display.
The non-display of icon files is not an isolated phenomenon; all icon files are not being displayed.
If it affects all icons then it probably means Preferences / File Display Columns / Icons / Show generic icons for... has been turned on, and needs turning off again.
Otherwise, please zip and attach some example icons with the problem.
