If you have run into Client in League of Legends and moved on without quite understanding it, this is the explanation.

Short answer

In practical terms: know what it does, know where it appears, and the rest is context.

Knowing this does not make you better at League of Legends, but it does make the rest of it legible. Community shorthand around it has drifted far enough from the original meaning to cause arguments. If you are coming to this after a long break, the terminology has probably moved on.

How it connects to the rest of League of Legends

The game introduces it quickly and assumes you picked it up, which is where the confusion starts. Two similarly named things exist, and mixing them up explains a lot of contradictory advice. The short version is near the top on purpose; the reasoning is there if you want to know why. It is more consequential in the late game than the early one, which is why first impressions mislead.

It appears in supplementary material in more detail than it does in the game. League of Legends is not shy about hiding useful information two menus deep, so some of this is simply knowing where to look. The wiki entry is thorough and buries the actually useful part six paragraphs down.

What it changes in practice

Whether it is worth going out of your way for depends entirely on how you are playing. The developers have changed their mind about this at least once, which explains the older advice. There is a persistent myth attached to it that has never been true in any version.

  • Note where it first appears, so you can go back if you need to.
  • Check which version of League of Legends any discussion of it is describing.
  • Region and platform change more than people expect, so confirm both.
  • Ignore the myth attached to it; it has never held up.

Where you encounter it

Its role has changed across updates, so older discussion describes something slightly different. Where two approaches both work, the one with fewer moving parts is the one to keep. Patch notes move numbers around constantly; the shape of the answer holds even when a specific value shifts. Anything that behaves differently on console than on PC is flagged where it matters.

The awkward part is rarely the step itself, it is knowing which step comes first. If your result differs from what is described here, note what is different first rather than starting over. Screenshots age faster than text, which is why this describes rather than shows.

Common misunderstandings

None of this needs a paid tool, a third-party launcher or an account on a site you have never heard of. Most of the disagreement you will find online is two people describing different builds. Do the cheap check before the expensive one — that ordering alone saves most of the frustration.

Nothing here assumes a particular playstyle beyond wanting the thing to work. If a step reads as obvious, do it anyway — the obvious ones are the ones people skip and then wonder about. A single check up front replaces a lot of guessing later.

What it is

There is usually a fast way and a reliable way, and it is worth knowing which one you are choosing. It helps to understand why a step exists, because then you can adapt it when your situation is slightly different. Treat anything stated without a version number as provisional.

Where people go wrong

  • Skipping the prerequisite because it looked optional in someone else's summary.
  • Copying a setup wholesale from a streamer without understanding what each part does.
  • Downloading a helper tool for something the game already does in its own menu.
  • Rushing the last step, which is usually the one with the actual requirement in it.

League FAQ

Can I miss it?

Where it is missable, that is noted above. Most players encounter it without going looking for it.

Do I need any mods or third-party tools for this?

No. Everything described here works with the base game on any supported platform.

Is this still accurate after the latest League of Legends update?

The method is; individual numbers may not be. If a value on your screen differs, trust the screen and keep the sequence.

What is Client in League of Legends?

The short answer is above. The longer one is that it fills a specific role, and understanding that role explains why it keeps coming up.

Come back to the caveats list if it does not work first time — the answer is almost always in there.