Delete Battle.net Desktop App Chat History

To clear chat history in the Battle.net Desktop app:

1. Open the chat window of the player whose chat you want to clear
2. Click on the dropdown next to the player's name or battletag
3. Click Clear Chat History
4. Click Clear

Clearing chat history only applies to you - the other player will still see your chat history in their app.

The Clear Chat History option is only available for individual chats, not for group chats or communities.