Forage key will become available to use and you receive a message "You must wait longer to forage" when used. Two things happen. One, like 10 or 20 seconds show up when you mouse over the forage button and it then works normally. Two, the button bugs out when used and only zoning will enable forage to be used again. I tried a /doability key and forage will still not work without zoning.
While logged out of EQ, check your system clock. Don't just look at the minutes, check it down to the seconds vs the atomic clock. Check the time zone. Change the Internet time source from time.windows.com to pool.ntp.org.