Programs being corrupted after some days

Mar 21, 2018
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Hi friends
I have Windows 7 and it has a strange problem. After installing programs, some of them work without a problem for days but then suddenly stop working after turning on PC another day. For example I have a program for VPN, it works great but sometimes stops working (with errors like ... has stopped working) and I should install it again. It's completely random and sometimes it works for 10 days without a problem and sometimes it becomes corrupt after 2 days.
I had this problem in my previous Win too. It's really strange that some program works great for days and suddenly stops working.