Release Candidate 1 (RC1) of Windows XP Professional x64 Edition is now available. Read what ZDNet reported after putting Build 1289 through its paces.

My question is what are the drawbacks of running the 32-bit version of Windows XP on dual quad-core Xeon processors? Will the OS be able to utilize the 4-cores in both processor?

I have Windows XP Pro installed on a single NTFS partition taking up the entire boot drive. Windows XP Pro works fine. I am trying to install System Commander 7 so that I can install other OS's ...

Microsoft, tacitly acknowledging the continued popularity of Windows XP, is updating the operating system's antipiracy technology to detect illegal copies installed with newly stolen or faked ...

Microsoft plans to update the Windows Genuine Advantage antipiracy software in Windows XP Professional to make nagging more prominent for those running bogus copies of the operating system.

An emulator company has shown a first look at running Windows XP on the Apple Vision Pro, for some reason.

Microsoft Windows XP Professional x64 Edition (XP64) uses the full power of modern 64-bit processors (the first pillar) and makes that power available to compatible 64-bit programs.

Newer Windows operating systems exist, but many people still use Windows XP Pro successfully to help them work. Although Microsoft support for Windows XP ends in 2014, you can still use it after ...

Benchmark tests of Windows XP Pro running on all three of the first Intel-based Macs reveal that the MacBook Pro runs Adobe Photoshop faster than other laptops originally designed for Microsoft ...

Agilent My Infiniium can run all Windows XP-compatible programs. Users in various development environments such as Agilent VEE Pro, NI LabView and Microsoft Visual Studio can take advantage of the ...

But when Surface Pro 3 came out, I was excited to discover that the HP tablet still booted, and more or less worked—the utter vulnerability of Windows XP notwithstanding.

What does Windows XP actually mean? Find out inside PCMag's comprehensive tech and computer-related encyclopedia.