Error 104 is often due to an anti-virus program blocking the patch. In some circumstances, the exception will need to be removed and re-added back as an exception to your antivirus program.
The application files that may require exceptions are:
- Bethesda.net_launcher: C:\Program Files (x86)\ZenimaxOnline\Launcher
- ESO.exe: C:\Program Files (x86)\ZenimaxOnline\The Elder Scrolls Online\game\client\eso.exe
- ESO64.exe: C:\Program Files (x86)\Zenimax Online\The Elder Scrolls Online\game\client\eso64.exe
- Steam.exe: C:\Program Files (x86)\Steam\steam.exe
Some antivirus programs require entire folders to be selected instead of a single file.When this is the case, the file paths below are what players should use. If required by the anti-virus program, include all subfolders since every file is critical to run the game.
- C:\Program Files (x86)\Zenimax Online\The Elder Scrolls Online\
- C:\Program Files (x86)\Steam\
There are some additional troubleshooting steps for Error 104 in the thread below.
Can't repair the client with 40GB free, not enough disk space error (104) - edit: error 1112 and 210