THE SOLUTION IS HERE:
scroll down to see original problem.
 had the same problem with ipconfig but after trying some of the suggestion from this post, I found out my "Routing and Remote Access" (Services) was disabled. Once I set it to automatic and start the service, the ipconfig finally start working. 
I'm using a IBM thinkpad t42...  
Quote: 
PostPosted: Sat Jun 18, 2005 5:12 am Post subject: re:ipconfig error 
Quote: 
I get the error below when I do an ipconfig. Everything works ok though, 
browsing, file sharing etc. Any ideas? 
Thanks, 
Rob. 
(PC is an IBM thinkpad running XP SP2) 
Microsoft Windows XP [Version 5.1.2600] 
(C) Copyright 1985-2001 Microsoft Corp. 
C:\Documents and Settings\robert>ipconfig 
Windows IP Configuration 
An internal error occurred: The operation completed successfully. 
Please contact Microsoft Product Support Services for further help. 
Additional information: Unknown media status code. 
Had the same problem. Try starting these services: 
Remote procedure call (RPC) 
Routing and Remote Access 
Started them and voila -- ipconfig works. 
netsh int ip show ipaddress had a more informative error message. 
 
  
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Moochie
Guest
 Posted: Tue Aug 09, 2005 6:24 pm    Post subject: re: ipconfig error  
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Same error and solution as above (starting rounting service) 
Same laptop as well - IBM TP42. Wonder if there was something from IBM that broke it? 
Also, wondering if this service is normally auto in XP default configuration? 
 
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[quote="djrobinn"]I'm getting this error message folks:
"C:\Documents and Settings\All Users>ipconfig
Windows IP Configuration
An internal error occurred: A device attached to the system is not functioning.
Please contact Microsoft Product Support Services for further help.
Additional information: Unknown media status code.
C:\Documents and Settings\All Users>
Please advise what to do.  Owing to this, I could connect using a dial-up connection but was not able to browse any sites, then I thought maybe the dial up is messed up, so I bought hi-speed cable internet, same problem, wouldn't connect.  Then I popped the Windows XP Pro CD in the drive and tried a "Repair Install" so that it could replace any missing or corrupt files, still no luck.  I had to then nuke the PC, format the HDD with NTFS, and then install XP over it, now finally the internet is working however, I still get the same error message when I type ipconfig on the dos prompt...its driving me nuts!! 
 
  
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