Bryant, of the MSRC, again reminded users that several editions of Windows are nearing forced support retirement, including Vista RTM next Tuesday, and Windows XP SP2 and Windows 2000 -- the latter two staring at a July 13 deadline.

Microsoft will release the two updates at approximately 1 p.m. ET on April 13.

Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld . Follow Gregg on Twitter at @gkeizer or subscribe to Gregg's RSS feed . His e-mail address is gkeizer@ix.netcom.com .

in Computerworld's Security Knowledge Center.