Telegram X has previously failed to launch because of TDLib fatal error. Press **Launch App** to try again. If application continues to fail, follow these steps: • [Verify](%2$s) you have the latest Telegram X version installed. • Restart your device. **If the steps above do not help** 1. Share error details with TDLib developers using one of the following ways: — Privately via [@tdlib_bot](https://t.me/tdlib_bot) by using another device or [Telegram Web](https://web.telegram.org/). — Publicly via [GitHub page](https://github.com/tdlib/td/issues). **Do not** share **tdlib_log.txt** publicly. 2. Kindly wait for the response. 3. Change log settings below as requested by TDLib developers. 4. Press **Launch App** to make app force stop again. 5. Share **tdlib_log.txt** with TDLib developers and wait for the problem to be resolved. 6. Once updated, you'll be able to launch app normally. **Alternative options** • Search for similar issues on [GitHub](https://github.com/tdlib/td/issues) to see if there are common solutions. • Reinstall the app. Secret chats will be lost. If you use same phone number you were logged in, all other chats and data will be restored from the Telegram cloud.