Of the roughly four-in-ten companies that had begun migrations, a third were three-quarters of the way done, and half said they were about 50% through the move.
Those may make the deadline, but others will clearly not: Nearly 20% of the IT leaders surveyed who said their firms were currently running Windows XP acknowledged that they plan to continue using XP after Microsoft pulls support.
Schare from Browsium said he has heard the same from his customers. "Everyone knows about the deadline, they want to do [migrations], but many are telling us that they won't finish until late 2014, or even early 2015," Schare said.
The end of the low-hanging upgrade fruit may be one reason why Windows XP's decline has slowed. Data published by Web metrics vendor Net Applications, which tracks operating system usage, shows that the long slide of XP's usage share has stalled since the first of this year. The slowdown started earlier, however: In the last six months, XP's average monthly decline was less than half the average of the six months before that.
Net Applications' statistics can also be used to roughly plot XP's future usage share. If the average decline of the last 12 months holds, XP will still account for 33% of all PCs expected to be running Windows at the end of April 2014.
Which prompted Schare, as it has others, to wonder if Microsoft might, just might, recant and extend XP's support if millions of its customers were still running the old OS -- and vulnerable to newly-discovered exploits -- after the deadline.
"What's going to happen next April if a large section of Windows users are not patched?" Schare asked.
Microsoft did not reply to that question, or others, on Monday.
But the company has been beating the migration drum. As far back as June 2011, a Microsoft manager claimed it was "time to move on" from XP. And it's kept up that drumbeat, most recently on Monday when it highlighted its Go2Modern website and rolled out a discount on Windows 8 and Office 2013 to small- and mid-sized businesses running Windows XP Professional.
Even so, Microsoft has been mum on how many Windows XP PCs it believes are still in use, how many will still be running a year from now, and how it expects customers, enterprises in particular, to acquire huge numbers of new machines in just 12 months.
Most analysts believe it's impossible for a company to migrate to a new operating system from a standing start in under 12 months. Microsoft admitted as much Monday. "Based on historical customer deployment data, the average enterprise deployment can take 18 to 32 months from business case through full deployment," said Stephen Rose, a senior product manager in the Windows group, on a company blog.
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