I am attempting to install SP1 for Vista 32x. The installation has failed countless times. I have attempted just about every suggestion I could find through research online with no luck. It always fails after the computer resets and the installation hits 2%. I get the error code 0x800F0826. I don't particularly need SP1, but I need Vista to recognize an exFat formatted external hard drive. To my knowledge, that is the only way to get Vista to recognize exFat? Currently, the system is only recognizing NTFS. Fat32 will not work as I have files over the 4GB limit. Any help or suggestions would be much appreciated. Thanks in advance!