FAQ: Windows XP SP3 nears finish line

Microsoft tests SP3 over Windows Update as it gets close to a wrap

What's new in XP SP3? Not much, according to the first version of the service pack's release notes, which are available on Microsoft's Web site.

As befits a service pack, especially the last of its kind -- this will undoubtedly be the final SP for XP -- SP3 is mostly about patches and hotfixes and other updates that have been issued incrementally since 2004, when Microsoft pushed Windows XP SP2 out the door.

But there are some new features. Most notably, it appears that Microsoft has kept its promise to upgrade the random number generator. Last November, remember, a team of Israeli researchers, led by Benny Pinkas at the University of Haifa, argued that attackers could exploit a weakness in Windows 2000's pseudo-random number generator (PRNG) to predict encryption keys. After some hemming and hawing, Microsoft acknowledged that Windows XP shared the bug, and said it would fix the flaw in SP3.

In the release notes, under the heading of "Microsoft Kernel Mode Cryptographic Module," Microsoft said that SP3 now "implements and supports the SHA2 hashing algorithms (SHA256, SHA384, and SHA512) in X.509 certificate validation." And that the "Federal Information Processing Standard (FIPS) 140-1 standard has been replaced by FIPS 140-2, and these modules have been validated and certified according to this standard."

FIPS, which stands for Federal Information Processing, is a US government security standard.

How long before SP3 goes final? Microsoft's not saying. All along, the six-month spread of the first half of 2008 has been as much as the company would admit.

But we think it's close. Here are the tea leaves we're reading:

  • Microsoft seeded Vista SP1 RC Refresh to testers via Windows Update on January 9, then posted it for public download January 11. A little more than three weeks later it shipped the service pack out the door. Using a similar timetable puts XP SP3 as wrapping up around the middle of March. If Microsoft takes SP3 RTM on a Monday, as it did Vista SP1, we've circled March 17.
  • The stress test of WU is a second clue; we've already covered that.
Can I roll back XP to its pre-SP3 condition if I want? How do I do that? Yes to the first. Easy to the second.

To ditch SP3 and return to (presumably) SP2, open "Add or Remove Programs" from Control Panel, check the "Show Updates" box, then scroll to the bottom of the listing. Select "Windows XP Service Pack 3" and then click the "Remove" button.

The PC needs to reboot, but after that the machine should return to its prior state.

Join the PC World newsletter!

Error: Please check your email address.
Rocket to Success - Your 10 Tips for Smarter ERP System Selection
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Gregg Keizer

Show Comments

Most Popular Reviews

Latest Articles


PCW Evaluation Team

Matthew Stivala

HP OfficeJet 250 Mobile Printer

The HP OfficeJet 250 Mobile Printer is a great device that fits perfectly into my fast paced and mobile lifestyle. My first impression of the printer itself was how incredibly compact and sleek the device was.

Armand Abogado

HP OfficeJet 250 Mobile Printer

Wireless printing from my iPhone was also a handy feature, the whole experience was quick and seamless with no setup requirements - accessed through the default iOS printing menu options.

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Ed Dawson

HP OfficeJet Pro 8730

As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?