https://technet.microsoft.com/en-us/library/2008.11.windowsconfidential.aspx https://technet.microsoft.com/en-us/library/2008.11.windowsc... gives a rationale f

https://technet.microsoft.com/en-us/library/2008.11.windowsconfidential.aspx https://technet.microsoft.com/en-us/library/2008.11.windowsc... gives a rationale for why Windows doesn't replace files that are in use.