just wondering if there is any way to check to if a name is not taken and not letting the server timing out

You can try, creating a character with that name?

Sorry if I'm missing something.

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In-game name: Mello

If the name is taken, the game hangs. OP was asking if there is some way around that because I imagine it takes a long time to experiment with name variations in between game-reboots.

Checking the AH for the character name is a good idea, but not perfect. It won't catch characters who have never sold anything on the AH (e.g., my mule), so it can't guarantee a name is available. Still, better than not doing it.

We used to have a name checker at some point last year. We can't have nice things.

Ah ok. I didn't know the game freezes, both my names went through first try. Good to know.

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In-game name: Mello

2nd this.. it's not perfect because some people create characters and don't do anything with them but it will help eliminate some.