Server issue, we all have the same error

We only support 10 or newer.

ayoub64 covered here https://forum.plutonium.pw/topic/6832/common-launcher-issues-solutions

Too old build, you need windows 10 1607+ to play on Plutonium.

WIndows 8 isn't supported. Upgrade to Windows 10.

LBDOZ win 10.

13XxALUCARDxX13 covered here https://forum.plutonium.pw/topic/6832/common-launcher-issues-solutions

i don't use any. I got windows defender desactivated

@ROCKEDRAGSTER2 covered here https://forum.plutonium.pw/topic/6832/common-launcher-issues-solutions

Swonk hit windows key + r and type

into the run dialogue, the hit enter.
Post a screenshot of the window that comes up.

Dss0 Thanks, it worked

Andres_56 most likely caused by your antivirus: https://forum.plutonium.pw/topic/8546/why-is-my-antivirus-saying-plutonium-is-a-virus-solution

SUBAROO win7 is not supported by pluto, upgrade to win10.