How do you glue a rear view mirror on the window?

Special glue required

Available at auto parts stores

The glue comes in a kit with instructions on how to prep and apply. The trick is get everything very clean and follow all preparation instructions. Glue the metal button on, let it set for at least 24 hours before reattaching the mirror

how do you remove the metal button on 1999 Avalon rearview mirror?

ANS 2 - The best glue for this is 'Loctite' Auto Mirror Adhesive.