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Windows has a feature that might give you a clue as to when an application was installed on your computer.
Someone else installed some Microsoft applications on my computer some time ago, I'm not sure who. The point is, I need to know the date that these applications were installed. Where can I look to find out when these applications were installed?
It's interesting that this information isn't made more obvious in add/remove programs in control panel.
My approach feels like a bit of a hack, but it's pretty reliable.
I'd just look at "date modified" property of the directory that the application was installed in. For example the date of the "Microsoft Office" directory in "C:\program files".
When a file gets installed, it usually carries the date and time of its creation with it: its creation by the manufacturer. However when the setup program does its thing, the directories it creates are time stamped with the time that setup created them. Unless something comes along later and modifies it, which is fairly unusual, it's a good, quick, and easy way to find indicator of when the program was installed.
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