FIX error code 646: Go to Microsoft download center, and download each KB number for each download seperately. i.e. KB974561, etc. they have that number listed on each important update to be installed
...fix error code 646 microsoft windows vista home premium software * The solution, in a nutshell, is to disable your firewall. If you’re using McAfee Personal Firewall Plus, F-Secure Internet Security, ...
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