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Is it safe to delete the file rtlgina.dll?

I tried to upgrade the computer to Windows Service Pack 2, but when it was doing a compatibility test, Replacement Logon Software came up, saying something like " This software is not compatible with Windows, Please uninstall." i found out the file was rtlgina.dll, a program which replaces the original microsoft log in screen. If I continue with the update, this file would be deleted but will it mess up my computer? Thanks

Public Comments

1. Dear,

   Before upgrading your system backup all your data. rtlgina.dll is a system registry file that helps to operate your system. And if the message shows that this software is not for your operating system then avoid to install .