1. HOW TO: Troubleshoot Windows XP Setup Problems When You Upgrade from Windows 98 or Windows Me
2. Cdplayer.exe Still Present but Does Not Work Correctly After Upgrade from Windows 98 or Windows 2000
3. Computer Stops Responding After Upgrade from Windows 98 or Windows Me
4. Dial-Up Networking Connections Do Not Work After Upgrade to Windows XP
5. Error Message When You Upgrade to Windows XP: Migisol Caused an Error in KERNEL32.DLL
6. Error Message: Setup Cannot Continue. Please Contact Microsoft Technical Support. (Error: 3E6h)
7. Error Message "Setup Cannot Upgrade..." When You Upgrade to Windows XP Professional
8. Error Message After Upgrade to Windows XP: The Following File Is Missing or Corrupted: Windows\System\Vgaoem.fon
9. Error Message: The System Has Recovered from a Serious Problem
10. Internet Access Is Restricted After You Upgrade from Windows Me
11. Missing Data or Program Settings After Upgrade to Windows XP
12. Missing Data or Program Settings After You Upgrade to Windows XP
13. Modem Does Not Work After You Upgrade a Hewlett Packard Pavilion Computer to Windows XP
14. "NTLDR Is Missing" Error Message When You Upgrade or Install Windows XP Over Windows 95, Windows 98, or Windows Millennium Edition
15. Passwords Are Unexpectedly Assigned to User Accounts After You Upgrade to Windows XP
16. Previously Installed SBLive! Accessories Do Not Work After Upgrade from Windows Me to Windows XP
17. Setup Error Appears During an Upgrade from Windows 98 or Windows Me to Windows XP
18. "Setup Was Unable to Load File" Error Message When You Upgrade to Windows XP Home Edition
19. "Stop 0x0000000A Irql_Not_Less_or_Equal" Error Message During Windows XP Upgrade
20. Upgrade to Windows XP Does Not Retain the Mapping of Two Keys on the Gateway Enhanced Keyboard
21. Windows XP Setup Halts When You Start Installation from Within Windows 95 
22. Windows XP Setup Stops Responding (Hangs) During the "Preparing Installation" Phase
23. Windows XP Upgrade Advisor Warning About the IrDA Protocol
24. Audio Devices Listed as Unknown Hardware in Device Manager After Upgrade from Windows 98/Me to Windows XP
25. Uninstall Option Not Available" Error Message When You Upgrade Your Computer to Windows XP

 Windows 2000 to XP Known Upgrade Issues

1. Cdplayer.exe Still Present but Does Not Work Correctly After Upgrade from Windows 98 or Windows 2000
2. Passwords Are Unexpectedly Assigned to User Accounts After You Upgrade to Windows XP
3. "Setup Unable to Gain Access to Your Existing Boot Configuration File" Error Message During Upgrade
4. Stop Error When You Upgrade from Windows 2000: Bad_Pool_Caller 0xC2
5. "STOP: 0x1000008E In EMUPIA2K.SYS" Blue-Screen Error Message Appears After Upgrade from Windows 2000
6. "STOP 0x000000ED UNMOUNTABLE_BOOT_VOLUME" Error Message During Windows XP Upgrade

 NT 4 to XP Known Upgrade Issues

1. Windows Upgrade Advisor Quits Abruptly During System Compatibility Check and No Report Appears
2. You Receive a "Windows Setup Cannot Continue Without Service Pack 5 or Greater Installed" While Upgrading to Windows XP

 Thanks to LabMice for compiling this list of known MS-KB XP upgrade issues. Please visit the LabMice web site.

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