: Some versions of this documentation also reference resolutions for Windows Installer issues, such as premature removal of assemblies from the Global Assembly Cache (GAC) during product upgrades. Technical Details (x86 PTB)
It primarily updates the crypt32.dll file to allow the OS to recognize and process newer, more secure SHA-2 certificates. windows xp kb 968730 x86 ptb hotfix
If you are running an English (EN-US) or European Portuguese (PTG) version of Windows XP, this hotfix is and will fail to install. : Some versions of this documentation also reference