When you first meet Esbern during A Cornered Rat as part of the main quest, sometimes his voice will be missing and/or he doesn't answer the door.
- "Skyrim: Esbern - Bugs" article, UESP wiki
I saw some solutions:
- Download plugin - but it's only in English and I don't want to mix two languages, because it will ruin the game atmosphere for me.
- Use OBMM and repack Data files. But I haven't got Oblivion (and enough space to install it) and no instructions to install it without the game.
Is there are another solution to fix this issue?