Use this guide when YouTube does not finish connecting. The most common fixes are choosing the correct Google account, switching to the right channel, and confirming that your Google account has permission to manage a Brand Account channel when one is involved.
Most YouTube connection problems happen because the browser is signed into the wrong Google account, the wrong channel is selected, or the connected Google account has not been granted access to the Brand Account that owns the channel.
Google signs in successfully, but the channel you need never appears. This usually means the browser is using a different Google account than the one that manages the channel.
If one Google account manages several channels, YouTube can open under the wrong channel identity unless you switch before reconnecting.
Channels connected to a Brand Account require the current Google account to be added as an owner or manager before the connection can complete.
If the Google consent screen is closed, cancelled, or left incomplete, YouTube returns without a working connection.
Signing in with Google works, but an account without a channel cannot be connected. Create a channel, then reconnect.