The Wanna Cry ransomware has wreaked havoc across the NHS since appearing at the end of last week, blocking staff from accessing patient data.
It has also locked down computers across many other organisations, including Telefonica and Fed Ex, taking advantages of vulnerabilities in Windows XP - an operating system Microsoft launched in 2001 and withdrew full support for in 2015.
In this story we explain things you should consider before you upgrade from Windows XP to Windows 10.
If you have followed MS KB 949377 and Windows XP SP3 still does not install for you, please read the entire article.This was because the machine came with Windows Vista, but the owner wanted XP due to some applications not working well under Vista.Immediately after XP was working properly, I enabled Microsoft Update (ref. Microsoft Update is an extension of Windows Update.If you see an "Windows installer package" alert message, follow these steps to try to repair the software through the Windows Control Panel.If the steps in these articles don't help you fix the issue, you might be able to find a solution through a search of the Microsoft support website.