I'd say this file is either kept opened (being executed counts as this) by some other program or — less likely, I admit — have some weird permissions set on it so that you really have no permissions for deleting it (Windows ACLs are powerful but very complicated).
So I'd first get the ProcessExplorer program from the Sysinternals suite (or the whole suite) and found out what process might have this file open. A mere reboot immediately followed by the installation attempt might help also. -- You received this message because you are subscribed to the Google Groups "Git for human beings" group. To unsubscribe from this group and stop receiving emails from it, send an email to git-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.