I. If you experience these errors or have these issues:Not enough hard disk space Quote:
Service Pack 3 Setup Error
You do not have enough free disk space on %SystemDrive% to install Service Pack 3.
Not enough hard disk space to archive files Quote:
Service Pack 3 Setup Error
You do not have enough free disk space on %SystemDrive% to archive the uninstall files.
Access Denied Quote:
Service Pack 3 setup error. Access is denied.
Service Pack 3 setup error. Service Pack installation did not complete
Insufficient permissions Quote:
You do not have permission to update Windows XP. Please contact a system administrator.
Cryptographic Subsystem Errors Quote:
Digital Signature Not Found
--or-
Microsoft Windows
The signature on the software package you want to install is invalid. The software package is not signed properly.
--or--
The cryptographic operation failed due to a local security option setting.
--or--
Setup could not verify the integrity of the file Update.inf. Make sure the Cryptographic service is running on this computer.
--or--
Failed to install catalog files.
--or--
The software you are installing has not passed Windows Logo testing to verify its compatibility with Windows XP.
--or--
Service Pack 1 Setup could not verify the integrity of the file. Make sure the Cryptographic service is running on this computer
___________________________________________Details, including KB links to resolve the above installation issues can be found here:http://support.microsoft.com/kb/950717/_________________________________________II. Troubleshooting Error Codes that appear in the update log or in the service pack log filesIf you experience a Windows XP SP3 installation failure, an error code is typically recorded in the %windir%\WindowsUpdate.log file or in the %windir%\svcpack.log file. Typically, these files are located in the C:\Windows directory. Error Code table, including KB links to resolve specific Error Code Issues:
The following KB Article, at bottom, has a table of the most common installation error codes, with a link for each to the relevant KB Article:http://support.microsoft.com/kb/950717/