Uploading iphotos to FB from macbook won't work

Hi - you don't use finder.

In Facebook, click the attach image button. Then you should get a picker that includes the photos option in the side bar under the media section (you might need to scroll down the side bar):

Or... you've collapsed the media section. Hover the mouse over the media section - does a right pointing > appear. if so, click it...

EDIT: - my second post below this one is more likely - try that first...

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OK - perhaps your library is no longer set as the system library (only the system library will appear on the left)

With your library open, open preferences and click the circled button. If it is greyed out then the library is already the system library, and that is not the issue.

Apple removed the ability to upload photos from the Mac a few years ago, they say for security reasons. Like you found out, it’s now a P.I.T.A. to do it from a Mac.

See my second reply above

Wooo hooo!

I do wish apple didn't hide that little arrow. Bonkers.

Glad it's fixed.