On Mojave 10.14.6, selecting jpgs on a server but I can't use Open with... > Preview
Preview is the default app for jpgs, and 'Open with' is working fine with other file types and apps.
Any idea what's the cause and fix?
There are two possible issues at play here.
Delete the following folder from your Library of the user. To see the hidden Library, try the keyboard combination of CommandShift .
Restart and test.