Plutonium

skyluz To add to what mulekick said Plutonium doesn't support Windows 7 and probably never will as it's just a waste of time. You should upgrade to Windows 8.1 or even better Windows 10.

seejayyyyy For multiplayer probably yes. You should see something about resolution, you could search (ctrl+f) keywords

Atzouk Are you sure that only the console opens? If you hover your mouse on the BO2 icon in your taskbar there's only the bootstrapper showing, no Black Ops II?

PhilosophyBits No one here told you to use this link.. Read the official Install guide instead of using potentially outdated/malware filled files

mayood232 You either have a software with an overlay running so try to quit any program that could have an overlay before starting the game or one of your plugged in devices crash the game so try to unplug everything but mouse, keyboard and main monitor before you start the game (VR headset, other monitors, controllers etc.)
Also what is your antivirus? (even if it is disabled)

MohadailyOnYT Bans only happen if you mess with the game (aka cheating) and a ban this long means he already got banned and this is another ban

BoscaDunFear then you either have a software with an overlay running or one of your plugged in devices crash the game so try to unplug everything but mouse, keyboard and main monitor before you start the game (VR headset, other monitors, controllers etc.)

pepsi con limon on your second screenshot are you sure that "Internal host" is your PC? Also as the guide says make sure to be in-game to be joined.
If you did all that then maybe that's your issue:
even if you did everything correctly some softwares can still block the connections like your firewall or your antivirus firewall.

Beposparuga If you're using pluto_t6_full_game then try to repair your game. If you're using your Steam files then did you download the DLC? If not then obviously the game cannot load DLC without DLC files. You could either install them on Steam if you own them or follow the T6 DLC guide.

seejayyyyy Try switching between windowed borderless and fullscreen mode, I'm pretty sure one of those two will have the option. If this still doesn't work you could change your resolution in the config files

Veofiy afaik there's no voice chat planned for BO2. You could use Discord instead. If you're playing on a server that has their own Discord server you could check if they don't have voice channels there and ask people to join or if there's none you could ask people to join a voice channel on Plutonium's Discord server

Envoi une capture d'écran de l'erreur complète. Ce code d'erreur ne veut rien dire voire même n'existe pas

Jonesii You could try to repair your game

LauEchev adunkee preggerz_mgee Try to download and then run Redist-Installer.bat, let it finish to install the required redists then restart your PC and try again.

Heppell are you using your Steam files? If you don't own the DLCs and try to play them without downloading them in the first place it will obviously not work.
For Steam you can follow the T6 DLC guide on the forum, for the torrent you can just follow the instructions on the message above mine

BigBulldog87 I'm pretty you said you have Bullgard and we already told you uninstall it, did you do it? If not then creating a new post asking for the same stuff without listening to us in the first place is useless.
Also if you uninstalled Bullgard but installed another antivirus then what is it? Might be as shitty as the previous one thus causing the same issue.

RukaSarashina do you get any error or does it just take you to the main menu without any message?

@FluffehPanda Did you try several maps? Also my guess is that you got incomplete/corrupted files for your map by joining a server so you should try deleting the mod and install it manually instead. Also as I said try different maps maybe there's one map that either has issues or requires a specific graphic setting and you didn't see it mentioned where you downloaded the map.

iosoyDeffect Plutonium doesn't support Windows 7. Upgrade to Windows 8.1 or 10 (10 is recommended)

@MSD_viking Télécharge Redist-Installer.bat met le n'importe où sur le bureau par exemple, lance le et laisse le finir de tout installer. Une fois que c'est bon redémarre ton PC et essaie de lancer le jeu à nouveau.