Windows updating every day
That, in turn, means that millions of PCs are pwned every day by malware using bugs that were patched ages ago.
Updates that aren't security related usually fix problems with or enable new features in, Windows and other Microsoft software. Yes, you can change this or that setting to put them off a bit, but there's no way to keep them from installing.
Prior to Windows 10, however, you could choose to not install updates at all, but I certainly don't recommend that you do that.
Update, May 15: With the Windows 10 Creators Update, Microsoft has largely addressed the forced updates that often resulted in lost work.
And, while the the recent Wanna Cry ransomware does not (thus far) appear to affect Windows 10, you need to make sure your PC is kept up-to-date with security patches to avoid exactly those sort of attacks.
This conference will bring senior IT decision-makers to discuss the latest strategies for Dev Ops implementation.