Windows Error:127 [ERROR=127 (7Fh)]

ERROR MESSAGE

Cannot get main entry point for C:WINDOWSSYSTEMVIPERSTI.CPL. Error:127 [ERROR=127 (7Fh)]

OR

The signature for Windows XP edition Setup is invalid. The error code is fffffdf0.

The system cannot find message text for message number 0xfffffdf0 in the message file for Syssetup.dll.

OR

Setup failed to install the product catalogs. This is a fatal error. The setup log files should contain more information.

OR

Warning! Setup failed to remove the setup catalog ieexcep.cat

OR

Warning! Setup failed to remove the setup catalog sp1.cat

SOLUTION

To solve this problem, rename the %WinDir%\System32\Catroot2 folder. For more information about how to rename folders by using the Windows XP user interface, click Start, click Help and Support, type renaming folders, press ENTER, and then click Change the name of a file or folder.

To rename the %WinDir%\System32\Catroot2 folder at a command prompt, follow these steps:

1. While the Setup program is running, and while the error message still appears on the screen, press SHIFT+F10 to start a command prompt.
2. At the command prompt, type cd\windows\system32\, and then press ENTER.
3. Type rename catroot2 catold, press ENTER, and then restart the computer.
4. Try again to finish the upgrade.

If you cannot start a command prompt while the Setup program is running, start the computer from a Microsoft Windows 95, Windows 98, or Windows Millennium Edition startup disk, and then rename the %WinDir%\System32\Catroot2 folder. Or, start the computer from the Windows XP CD, and then rename the folder in Recovery Console.