Today,Gadget News abotu Mcafee Virus update prevent for problem failure windows XP SP3.Yesterday, Mcafee Virus update  problem failure windows XP SP3A.The failure Mcafee update  Windows XP SP3 because booting.From Guardian reports,Give 11-step guide to repair the damage .McAfee has admitted that The Mcafee update  Windows XP S antivirus signature has paralysed corporate computers - but played down the significance, insisting that “less than one half of one percent of our enterprise accounts globally and a fraction of that within the consumer base”.The fault means that a critical Windows system file is removed - meaning that the machine will not boot up. McAfee said that it had remedied the flaw in its scanning with a new update - but people whose machines were affected might have to fix the problem manually.The fault was introduced after McAfee tried to protect customers against “a new threat that impacts Windows PCs”. But the cure turned out to be serious as well: it removed svchost.exe, a crucial Windows system file. That meant that computers which had applied the update would not boot. Although svchost.exe has repeatedly been the target of viruses, it is unclear why McAfee’s update took this action against it - and the post by Barry McPherson, on the company’s security insights blog, doesn’t explain