Updated: July 9, 2020 (August 8, 2011)
Charts & IllustrationsImportant Dates for Windows Client
Mainstream support for Windows 7 will end in Jan. 2015. Windows Vista will leave Mainstream support in Apr. 2012, and Extended support for Windows XP SP3 ends in Apr. 2014. It is not likely that any further fixes, including security fixes, will be made to Windows XP, and customers should be moving to Windows 7.
OS service packs also have retirement dates. Once a service pack is retired, Microsoft will no longer make security patches available at that service pack level. In general, a Windows service pack is retired either 24 months after the next service pack is released or at the end of the Extended support phase, whichever comes first.
| Date | Version | Event |
| Apr. 9, 2013 | Windows 7 | SP1 required for support after this date |
| Apr. 8, 2014 | Windows XP SP3 | Extended support ends |
| Jan. 13, 2015 | Windows 7 SP1 | Mainstream support ends |
| Apr. 11, 2017 | Windows Vista SP2 | Extended support ends |
| Jan. 14, 2020 | Windows 7 SP1 |
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