Telethon: Login with another phone, code always expired

[farodrig]

Hi, when I tried to login with a phone different than the one I used in the telegram API registration, the client always send me a code expired message when I provide the code for the login.

I don't know if what I'm trying to do is not supported or what. This happen using the interactive telegram client. (I'm trying to login with a different number, providing the correct login code).

I hope someone could help me.

(I am not a native speaker, sorry for my english)

[Lonami]

Are you sure you're using the code sent to that phone and not to your main phone?

[farodrig]

Yes, I'm sure.

Using my app_ID and my app_hash provided by Telegram, I put the phone number of a friend sat next to me, he received the code in his phone and I put it in the client and responded me a code expired error.

I'm supposed to be able to do this, right?

[Lonami]

I'm supposed to be able to do this, right?

Yes, it's really strange it doesn't work with a different phone number. Do you have other phone numbers to test this with? I presume that the computer you're working with has the right time zone and such? Sorry https://core.telegram.org/api/errors doesn't give much more information about PHONE_CODE_EXPIRED.

Both people here and here mentioned it's a DC issue, but those should be handled gracefully already. Try changing the default one under session.py in the Session class? Maybe with the IP that api.telegram.org shows?

[FrayxRulez]

@farodrig are you sending the code via Telegram to another account before using it?

[farodrig]

yes!! It's that??

[FrayxRulez]

Yep, if you send an auth code via Telegram it expires automatically

[Lonami]

Thank you @FrayxRulez :)

[LeeHJones]

Confirmed on this, btw. As soon as I had a colleague send me the login code via WhatsApp, everything worked perfectly. Huge props to @FrayxRulez .

[Lonami]

I had completely forgotten about this issue and it was discussed again recently on another Telegram API-related group. Closing #516.

[SmartManoj]

@FrayxRulez How the code expires when sending through telegram?

[Lonami]

It's a server-side check to prevent people from "accidentally" telling a possible attacker the code.

[SmartManoj]

@Lonami Even in Secret Chats?Are only the particular users message validated ?

[alex2304]

That feeling when you don't send code to anyone, and it is always expired... =/

[gespispace]

That feeling when you don't send code to anyone, and it is always expired... =/

Can you solve the problem?

[SmartManoj]

Yep, if you send an auth code via Telegram it expires automatically

Append zero with code to obscure it