Plutonium

You cannot switch modes like this. Use the launcher. Also campaign is not available

While not in LAN mode yes

Maybe you have Steam opened in the background
Try fully exiting it

Unbanned you

I'll take a look at it with admins and get back to you

xifeu what's your antivirus?

sharkboyyy300 something on your side crashes the process (driver, software, plugged in device, overlay etc)

Not really sure what the issue is exactly etc

Could be your antivirus or some security software whatever blocking something

sharkboyyy300 well doesn't look like it is
Folder must be the BO2 folder with valid and up-to-date BO2 files

I doubt installing both MP and ZM in Steam and selecting the right folder would throw out this error

xifeu [OWL]Sceptix briskoLEGOAT

• Does this happen in both MP and ZM or just one?
• Which Plutonium version are you running? https://plutonium.pw/docs/update/#checking-if-your-launcher-is-up-to-date

Read the solution

DYOZE Read the doc
https://plutonium.pw/docs/custom-games/#t4

Use Cloudflare Warp or DNS

SniperLune this one lmao

Hit refresh

Zyl3Xm if you fail to see the download link then installing it may be impossible for you, probably can't use it then

https://forum.plutonium.pw/topic/36417/bo2-zombies-custom-game-issues/

Could be antivirus

We only support custom games and dedicated servers

Using the public match option is not supported