After posting the thread here, I searched online and came across this guide. I followed some useful methods from there. First I run the Hextech repair tool and temporarily disabled security software. After doing the tasks properly, I had no longer any issues while playing the game.

Hello everyone, I recently installed League of Legends on my Windows 10 computer. But friends, the first few days I had no longer any issues while playing the game. But since yesterday when I play the game, after a few minutes of playing, I was getting this error "League of Legends error 003.&q...