Windows Fundamentals for Legacy PCs (also known as Windows FLP) is a lighter version of the Windows XP operating system developed by Microsoft, and is designed for business users with older hardware. Many components of the operating system are optional, tailoring to specific needs.

It was released to manufacturing in 2006-07-08 and was intended for Microsoft Software Assurance users who were still running Windows 9x (or Windows NT 4.0) to upgrade to Windows XP, without having to change hardware (such as memory or the CPU). It had a successor known as Windows Thin PC.

WinFLP uses Service Packs for Windows Embedded.

The only legal way to obtain the OS is through Microsoft's Software Assurance program.

Using Registry Hack[edit | edit source]

When you want Install Windows XP Professional SP3 using ISO without FLP SP3, It's easy trick to use FLP.

  • Press the Win+R Button..
  • Now type Regedit and click OK,
  • Find the Key Folder WPA like this: "HKEY_LOCAL_MACHINE\SYSTEM\WPA"
  • Right Click "WPA" Key Folder and Click New Key Folder, Type Fundamentals.
  • Right Click Again for Fundamentals Key Folder, and Click New DWORD Value, Type Installed.
  • Set the DWORD Value for Installed 0 to 1, and Click OK.
  • Restart your Computer, then type Winver on Run Dialog and Click OK.

Features[edit | edit source]

Included[edit | edit source]

  • Remote Desktop
  • Windows Media Player
  • Internet Explorer

Removed (from Windows XP)[edit | edit source]

  • Paint
  • Backgrounds
  • Screensavers

Supported (as updates)[edit | edit source]

Builds[edit | edit source]

Beta[edit | edit source]

RTM[edit | edit source]

Service Pack 3[edit | edit source]

Known Issues[edit | edit source]

  • iTunes doesn't work on Windows FLP, it will appears BSOD.
  • Add/Remove Windows Components was removed on Windows FLP, you need use Registry Hack on Windows XP.
  • Installing Windows XP SP3 gives Error, you need download Windows FLP/Embedded POS SP3 to upgrade on SP2.
    • Or use Registry Hack using i386.
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