Fix #1: Use a non-child account. The most common reason why many people are unable to join a game and encounter the Roblox error code 103 is an issue with their account.

Having trouble playing Roblox? Here's what you need to know about error code 103.

Here are the working solutions to fix Age Restriction Error 103 and Initialization Error 4 for Roblox on Xbox One or Windows PC.