"Accesso negato" , NativeErrorCode =5 ?

Ciao a tutti ,
stavo cercando di fare un programma per cercare un exe sulla base della sua impronta in memoria :

[DllImport("kernel32.dll")]
        public static extern bool ReadProcessMemory(
        IntPtr hProcess,
        IntPtr lpBaseAddress,
        byte[] lpBuffer,
        UInt32 nSize,
        ref UInt32 lpNumberOfBytesRead
    );
        private void button1_Click(object sender, EventArgs e)
        {
            Process[] process = Process.GetProcessesByName("WindowsTerminal");
            byte[] memory = new byte[255];
            uint bytesRead = 0;
            bool success = ReadProcessMemory(
                         process[0].Handle,
                         process[0].MainModule.BaseAddress,
                         memory,
                         (uint)memory.Length,
                         ref bytesRead);
            bool t = success;
            this.FindProcess(memory);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Process[] process = Process.GetProcessesByName("PerfWatson2");
            byte[] memory = new byte[255];
            uint bytesRead = 0;
            bool success = ReadProcessMemory(
                         process[0].Handle,
                         process[0].MainModule.BaseAddress,
                         memory,
                         (uint)memory.Length,
                         ref bytesRead);
            bool t = success;            
            Process[] process1 = Process.GetProcessesByName("WindowsTerminal");
            byte[] memory1 = new byte[255];
            uint bytesRead1 = 0;
            bool success1 = ReadProcessMemory(
                         process1[0].Handle,
                         process1[0].MainModule.BaseAddress,
                         memory,
                         (uint)memory.Length,
                         ref bytesRead);
            bool s = success1;
            //this.FindProcess(memory);
        }

        private void FindProcess(byte[] impronta)
        {
            Process[] listProcess = Process.GetProcesses();
            bool found = false;
            int counter = 0;
            int counted = listProcess.Count(); 
            while(counter < counted && !found)
            {
                Process currentProcess = listProcess[counter];
                byte[] memory = new byte[255];
                uint bytesRead = 0;
                try { 
                    bool success = ReadProcessMemory(
                                 currentProcess.Handle,
                                 currentProcess.MainModule.BaseAddress,
                                 memory,
                                 (uint)memory.Length,
                                 ref bytesRead);
                    if(impronta==memory)
                    {
                        found = true;
                    }
                } catch(Exception ex)
                {
                    this.textBox1.AppendText(ex.Message);
                }
                counter++;
            }

        }

tutto funziona se analizzo un processo alla volta come in "button2_Click" ,mentre mi ritorna un errore "Accesso Negato" se cerco di analizzare tutti i processi ciclando sulla collezione degli stessi come in FindProcess , come NativeErrorCode ho 5 ,il che dovrebbe corrispondere ad InvalidClass ( https://learn.microsoft.com/en-us/dotnet/api/microsoft.management.infrastructure.nativeerrorcode?view=powershellsdk-7.3.0 ), valore che non mi dice molto, forse è l'av che non gradisce si scanni la memoria? ,