TASS, April 29. Users of the Telegram messenger in Europe may experience connection problems due to overheating of servers, Telegram founder Pavel Durov tweeted on Sunday.

"Massive overheating in one of the Telegram server clusters may cause some connection issues for European users within the next couple of hours," Durov wrote. Technical services are already dealing with the problem, he added.

According to data of the Downdetector service, the failure in messenger operation has already been registered. 78% of users have connection problems and 21% cannot send messages.

On April 13, Moscow’s Tagansky Court satisfied the claim of Russia’s Federal Service for Supervision of Communications, Information Technology and Mass Media (Roskomnadzor) to block access to the Telegram instant messaging service in Russia due to its failure to provide the keys for decrypting users’ messages to the Federal Security Service (FSB). On April 16, communication providers embarked on carrying out the blocking process.