What Causes the “We have restored this installation to an older version of League of Legends” Error on League of Legends?

We found the underlying causes to be:

Solution 1: Tweaking Date and Time

There are split results with this issue, some people are facing this issue because their date and time settings aren’t configured accurately while others have been able to bypass this issue because of their date and time settings being configured inaccurately. We will try both these fixes.

Solution 2: Using Hex Tool

The Riot Games’ developers recommend an automated fix tool to clear any issues with their games and we will be using that tool in our case to determine if there are any missing files from the game. For that:

Fix We have restored this installation to an older version of League of Legends Issue - 9Fix We have restored this installation to an older version of League of Legends Issue - 27Fix We have restored this installation to an older version of League of Legends Issue - 51Fix We have restored this installation to an older version of League of Legends Issue - 62Fix We have restored this installation to an older version of League of Legends Issue - 45Fix We have restored this installation to an older version of League of Legends Issue - 11