Starting July 2019, MTASA is dropping XP and Vista support. We have a very small userbase on these platforums, but we do still have some users. If you are one of these users, please upgrade to Windows 7 or newer.
To be transparent, the reason for the drop is we have to do too many things to work around XP and Vista because of their age. Recently some changes were ran into which wouldn't work on XP and Vista because of kernel compatibility. We made a decision to simply drop the operating systems altogether as they are just far too out of date.
-- MTA Team