The PXE specification states that each network-booting client computer must indicate its architecture by setting Dynamic Host Configuration Protocol (DHCP) option 93 to the appropriate value. However, on many x64-based client computers, the value may not be set. Or, the value may be set incorrectly. For example, the architecture may be specified as x86 even though the client computer is x64-capable. The following table lists the architecture values.
|0||IA x86 PC|
|5||Intel Lean Client|
When architecture detection is enabled, the client computer downloads a network boot program (Wdsnbp.com) from the server. Then, the network boot program reports the architecture of the client computer to the server. This operation occurs before the client computer downloads the default boot program for its architecture. Examples of the default boot program include Pxeboot.com and Pxeboot.n12.
Architecture detection may add time to the boot process, increase network traffic, and increase the load on the server. By default, architecture detection is turned off.
To review the server's architecture detection setting, type the following command at a command prompt, and then press ENTER:
wdsutil /get-server /show:config
For more information about WDS and the Wdsutil.exe command-line tool, visit the following Microsoft Web site: For more information about a similar issue, click the following article number to view the article in the Microsoft Knowledge Base:
"File Not Found" when remote install client connects to server