The name Skyrim - Voices_en0.bsa tells you exactly what lives inside:

within your specific MO2 profile folder, as it overrides the one in your Documents. Check the Language: Skyrim.ini with Notepad and ensure the following line matches: sLanguage=ENGLISH Check the Archive List: Scroll down to the section. Look for sResourceArchiveList2 and ensure it includes the correct filename:

Let’s address specific problems tied directly to Skyrim - Voices-en0.bsa .

The .bsa extension stands for . It is a proprietary compression format used to bundle thousands of loose files into a single repository, making it easier and faster for the game engine to read.

Are you playing the (or Anniversary) or the original 2011 game?

Skyrim - Voices-en0.bsa Bethesda Softworks Archive that contains the English voice-over audio for The Elder Scrolls V: Skyrim

If a mod offers separate downloads for LE and SSE, always download the correct voice BSA patch. Some mods ship with voice BSAs that must be extracted and repacked for the other version.

A .bsa file stands for . It is a proprietary compressed folder format used by Bethesda Game Studios to pack thousands of individual assets—like textures, meshes, animations, and audio—into a single file. This prevents Windows from having to read millions of tiny, loose files, which dramatically improves game loading speeds. The Voices-en0.bsa file specifically handles:

First, a quick primer. BSA stands for . It is a proprietary archive format used by Bethesda Game Studios (for Fallout 3 , Fallout 4 , Oblivion , and Skyrim ) to package game assets into single, compressed files.