any have idea why?

[armisch]

Error: System.UnauthorizedAccessException: Odmowa dostępu do ścieżki „D:\ReturnOfReckoning-Oct2021\Warhammer Online - Return of Reckoning\WAR.exe”.
w System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
w System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
w System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
w RoRLauncher.Client.gpO8GoqNcbiQP8YRNvx(Object , FileMode , FileAccess )
w RoRLauncher.Client.Handle(PacketIn packet)
w RoRLauncher.Client.SKMvyPqOQwpkvhoJPqZ(Object )
w RoRLauncher.Client.OnReceive(PacketIn packet)
w RoRLauncher.Client.bEGQ8fqB16OtEsonTDI(Object )
w RoRLauncher.Client.Nimgt80cKi(Object )

[xpander]

Looks like either antivirus/firewall blocking or you dont have permissions to the files.
basically:
- whitelist the game on your antivirus/firewall
- right click and properties on "Warhammer Online - Return of Reckoning" folder and untick read-only