Windows XP build 2509
| Build of Windows XP | |
 | |
| OS family | Windows NT |
|---|---|
| Version number | 5.1 |
| Build number | 2509 |
| Architecture | x86 |
| Build lab | main |
| Compiled on | 2001-07-02 |
| Expiration date | |
| Timebomb | 2001-12-29 (+180 days) |
| SKUs | |
| Professional | |
| Product key | |
| QB2BW-8PJ2D-9X7JK-BCCRT-D233Y | |
| About dialog | |
  | |
Windows XP build 2509 is a pre-RC2 build of Windows XP, which was originally leaked as a corrupt image file. The complete version of the build was later found on 27 December 2021.
New features and changes
Boot screen
The alternative AUTOCHK boot screen (which can be invoked by adding the /SOS switch to BOOT.INI) has been updated to remove the final remaining reference to Whistler.
Internet Explorer
The "smart tags" feature was removed from Internet Explorer.
Bugs
Installation
The initial copy of this build contains corrupted files ranging from AAAAMON.DL_ to CYZPORT.IN_ on the installation media. This can be solved by copying all the needed files from the i386 directory of build 2505's installation media.
File differences
The following files have been introduced or removed compared to build 2505 Professional:
| Name | Description | Version |
|---|---|---|
| exp164xr.icm | ||
| exp164xt.icm | ||
| idwlog.exe | Idwlog 2000 System Client. | 2 |
| per164_r.icm | ||
| per164_t.icm | ||
| testroot.cer |
| Name | Description | Version |
|---|---|---|
| appprof.mfl | ||
| appprof.mof | ||
| cbmdmkxx.sys | Xircom CardBus Modem Win 56 | 1.90.7 |
| ietag.dll | Microsoft Office component | 10.1.2812 |
| msnbho.dll | MSNBHO | 1.0.85.1 |
| msnsl.inf | ||
| profdef.dll | Microsoft (R) Visual Studio VSA Profiling Defaulter (stand-alone) | 7.00.9189 |
| r2mdkxga.sys | Xircom RealPort2 CardBus Modem 56 Win-GlobalACCESS | 1.90.7 |
| r2mdmkxx.sys | Xircom RealPort2 CardBus Modem Win 56 | 1.90.7 |
| swflash.inf | ||
| swflash.ocx | Flash Player 5.0 r42 | 5 |
| unmsnsl.inf |
Gallery
Boot screen
Upgrade setup
Safe to shutdown screen
