The process cannot access the file .poshssh\hosts.json because it is being used by another process

When you run a lot of PowerShell objects concurrently which all use Posh-SSH to access different servers

` runThread = new Thread(() =>
{
if (_stop) return;
List openThrs = new List();

            foreach (var psslog in PSSLogs)
            {
                if (_stop) break;
                if (!cbOneByOne.Checked)
                {

                    filterByLog = string.Empty;
                    Thread ot = new Thread(() =>
                    {
                    if (_stop) return;

                        PowerShell ps = PowerShell.Create();


                    try
                    {




                        PSCommand cmd = ps.Commands.AddScript(
                  		scriptToRun.Script, true);

                            cmd.AddParameter("IP", psslog.Node.IP)
                            .AddParameter("Pass", psslog.Node.Password)
                            .AddParameter("Zip", binFile);

                            if (cbWithDataFile.Checked) {
                                cmd.AddParameter("DataZip", Path.GetFullPath($".\\GenerateData\\Data\\{psslog.Node.IP}.zip"));
                            }

                            cmd.AddParameter("ErrorAction", "Stop")
                            .AddParameter("Verbose");

                            ps.Runspace.SessionStateProxy.SetVariable("ErrorActionPreference", "stop");

                            psslog.Ps = ps;

                            ps.Streams.Error.DataAdded += Error_DataAdded;
                            ps.Streams.Verbose.DataAdded += Verbose_DataAdded;
                            ps.Streams.Progress.DataAdded += Progress_DataAdded;
                            ps.Streams.Warning.DataAdded += Warning_DataAdded;
                            ps.Streams.Information.DataAdded += Information_DataAdded;

                            ps.Streams.Error.EnumeratorNeverBlocks = true;
                            ps.Streams.Verbose.EnumeratorNeverBlocks = true;
                            ps.Streams.Progress.EnumeratorNeverBlocks = true;
                            ps.Streams.Debug.EnumeratorNeverBlocks = true;
                            ps.Streams.Information.EnumeratorNeverBlocks = true;
                            ps.Streams.Warning.EnumeratorNeverBlocks = true;

                            ps.Invoke(null, psslog.psObjects);
                        }
                        catch (Exception ex)
                        {

                        }
                        finally
                        {
                            ps.Streams.Error.DataAdded -= Error_DataAdded;
                            ps.Streams.Verbose.DataAdded -= Verbose_DataAdded;
                            ps.Streams.Progress.DataAdded -= Progress_DataAdded;
                            ps.Streams.Warning.DataAdded -= Warning_DataAdded;
                            ps.Streams.Information.DataAdded -= Information_DataAdded;

                            ps.Dispose();
                           
                        }
                    });
                    ot.Start();
                    openThrs.Add(ot);

                    while (PSSLogs.Where(w => w.Ps != null && w.Ps.Streams.Progress.Count>0 && !w.Ps.Streams.Progress.Any(a=>a.PercentComplete>=100)).Count() >= delayMS)
                    {
                        Thread.Sleep(1000);
                    }
                }
                else
                {
                    if (_stop) break;

                    PowerShell ps = PowerShell.Create();

                    try
                    {
                        ps.Commands.AddScript(
            			scriptToRun.Script, false);

                        ps.AddParameter("IP", psslog.Node.IP);
                        ps.AddParameter("Pass", psslog.Node.Password);
                        ps.AddParameter("Zip", binFile);
                        if (cbWithDataFile.Checked)
                        {
                            ps.AddParameter("DataZip", Path.GetFullPath($".\\GenerateData\\Data\\{psslog.Node.IP}.zip"));
                        }

                        ps.AddParameter("ErrorAction", "Stop");
                        ps.AddParameter("Verbose");

                        ps.Runspace.SessionStateProxy.SetVariable("ErrorActionPreference", "stop");


                        psslog.Ps = ps;

                        ps.Streams.Error.DataAdded += Error_DataAdded;
                        ps.Streams.Verbose.DataAdded += Verbose_DataAdded;
                        ps.Streams.Progress.DataAdded += Progress_DataAdded;
                        ps.Streams.Warning.DataAdded += Warning_DataAdded;
                        ps.Streams.Information.DataAdded += Information_DataAdded;

                        ps.Streams.Error.EnumeratorNeverBlocks = true;
                        ps.Streams.Verbose.EnumeratorNeverBlocks = true;
                        ps.Streams.Progress.EnumeratorNeverBlocks = true;
                        ps.Streams.Debug.EnumeratorNeverBlocks = true;
                        ps.Streams.Information.EnumeratorNeverBlocks = true;
                        ps.Streams.Warning.EnumeratorNeverBlocks = true;


                        ps.Invoke(null, psslog.psObjects);

                    }
                    catch (Exception ex)
                    {

                    }
                    finally
                    {
                        ps.Streams.Error.DataAdded -= Error_DataAdded;
                        ps.Streams.Verbose.DataAdded -= Verbose_DataAdded;
                        ps.Streams.Progress.DataAdded -= Progress_DataAdded;
                        ps.Streams.Warning.DataAdded -= Warning_DataAdded;
                        ps.Streams.Information.DataAdded -= Information_DataAdded;

				ps.Dispose();
                    }
                }
                Thread.Sleep(scriptToRun.Name == "Install" ? 3000 : 250);
            }
        });
        runThread.Start();`

System.Management.Automation.ActionPreferenceStopException: The running command stopped because the preference variable "ErrorActionPreference" or common parameter is set to Stop: The process cannot access the file 'C:\Users\user1\.poshssh\hosts.json' because it is being used by another process.
at System.Management.Automation.Runspaces.PipelineBase.Invoke(IEnumerable input)
at System.Management.Automation.PowerShell.Worker.ConstructPipelineAndDoWork(Runspace rs, Boolean performSyncInvoke)
at System.Management.Automation.PowerShell.Worker.CreateRunspaceIfNeededAndDoWork(Runspace rsToUse, Boolean isSync)
at System.Management.Automation.PowerShell.CoreInvokeHelper[TInput,TOutput](PSDataCollection1 input, PSDataCollection1 output, PSInvocationSettings settings)
at System.Management.Automation.PowerShell.CoreInvoke[TInput,TOutput](PSDataCollection1 input, PSDataCollection1 output, PSInvocationSettings settings)
at System.Management.Automation.PowerShell.Invoke[T](IEnumerable input, IList`1 output)
at Scripter.Form1.DownloadFile(PSSLog psslog) in E:\user1\Projects\Scripter\Form1.cs:line 906
at Scripter.Form1.<>c__DisplayClass26_1.<btnRun_Click>b__1() in E:\user1\Projects\Scripter\Form1.cs:line 480

Start by reproducing concurrent Posh-SSH operations and inspect access to .poshssh\hosts.json, focusing on the DownloadFile entry point in Form1.cs at line 906. The report's threaded invocation begins around line 480; done means concurrent operations no longer fail because hosts.json is locked.