How do I get my applications icon back to my icon dock?

open your finder's applications folder. hover over the word "applications" in the toolbar until the blue folder appears to the left of the word "applications", then drag and drop the folder icon onto the dock.

i found the answer to the "folder" issue. place the "application stack" on your dock.

then "control click" the icon and then choose "display as "folder"

and you get this:

Look in Applications folder and Drag and Drop it to Dock. It will only create and Alias for the Application in the Dock

Choose Computer from the Finder's Go menu, open the internal drive, and drag it back.

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when you "dropped" it, was it to the right of the thin vertical line?

IDK. i use the F4 key on my keyboard to get to my applications instead of having the "applications" folder on my dock. i'm sure, however, that someone else will know the answer to those 2 questions.

you're welcome. :)