Windows 10 boot & App Errors

I cloned my 1T WD Green SSD Model: WDS100T2GOA-00JH30 Serial # 190913446607 from my HDD and it worked great! Much faster! Loved it! After about 2 weeks it suddenly wouldn’t boot. Tried to fix - bombed. Put my old HDD back in. So slow. Formatted the SSD. A few weeks later cloned my HDD to the SSD again and it ran great. Suddenly, after about 2 weeks none of the Microsoft apps worked. Why the problems? Weak bit?