VALORANT Error Code 46 is an uncommon occurrence that only happens when the servers are under maintenance.
Error Code 46 refers to Platform Downtime. To be more precise, it occurs mostly when VALORANT client faces trouble connecting to the game servers. This happens due to planned downtime allotted for the engineers to work on VALORANT’s system.

How to Fix (A complete step-by-step guide)
Unfortunately, Error Code 46 is one of the few cases where players can not really do anything to fix the issue. Error Code 46 is a problem that is mostly related to server-side supervision. So, as long as the VALORANT servers are in maintenance, you can not enter into the game.
However, you can always check their official VALORANT Service Status page to know if the servers are back online or not. And as soon as the maintenance is done and servers go online, you can log back into the game and start playing.
However, if you notice that the servers are online and working properly, but you are still facing Error Code 46, you can create a ticket from the VALORANT Support page.
Read More: How To Fix VALORANT Error Code 44