Why can't we get a direct answer from MetaTrader themselves? Curious? Anybody!? Please reply, thank-you in advance.
The MetaTrader platforms will no longer support Windows XP,
Windows 2003 and Windows Vista after 01 October 2017.
Windows XP/Windows 2003/Windows Vista to be discontinued after
01 October 2017 - General - MQL5 programming forum
MetaQuotes Software Corp. 2017.06.01 08:02