Error message: 'Permission missing: Launcher' - any ideas?




Steps to reproduce:

Current Behavior:

Expected Behavior:

Studio/Robot/Orchestrator Version:

Last stable behavior:
Last stable version:
OS Version:
Others if Relevant: (workflow, logs, .net version, service pack, etc):

Permission Launcher error
Execute package on robot only machine

Hi ,
Could you be the more specific where your getting this error .
Screenshot would be much appreciated .


I am new to this and basically installed and tried to build a simple open browser robot

hit save and run and then get this


Hope you have admin access .
How about reinstall uipath and restart the machine .


why do I need admin access? I’m working with my IT now to see if it is an internal problem




What license do you use ?

You don’t have license to use launcher (robot)


i downloaded the software from the site community edition, I have a license code etc


I’ve got exactly the same problem, launched or not with admin rights, the message “Permission missing; Launcher” appears.
I’ve the community edition, and trying the evaluation version (with license), my own script and site samples gives same results.
Do you mean that without this license I cannot use the community edition ?


having the same issue while trying to execute a web recorded sequence.
Logs as below:
[ERROR] [UiPath.Workflow.Logging.StudioTraceListener] [21] System.ServiceModel.FaultException: Permission missing: Launcher

Server stack trace:
at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)

Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at UiPath.Models.IUiPathRemoteContract.StartJob(Stream jobInfo)
at UiPath.Models.UiPathProxy.StartJob(JobModel job)
at UiPath.Models.UiPathDuplexProxy.StartJob(JobModel job)
at UiPath.Workflow.Execution.WorkflowRunner.StartJob(JobModel job)
at UiPath.Workflow.Execution.WorkflowRunner.Run(String workflowFilePath, String projectName)
at UiPath.Workflow.ViewModels.MainViewModel.RunWorkflow()
at UiPath.Workflow.ViewModels.MainViewModel.<get_RunWorkflowCommand>b__72_0(Object param)
at UiPath.Workflow.RelayCommand.Execute(Object parameter)

Permission missing: launcher

@Varun_Mathur only on the specified workflow? Or every time you try to execute?


Tried with couple of web record sequence and find the same issue.


Have you tried what @ddpadil suggested? In my opinion it’s related to the admin permissions.
Did it worked before? Does this happen after you installed the latest studio version?


I have admin rights.
Haven’t tried restarting the system after installation…is that necessary?
Quick question ,while running web record sequence which uipath package is
requiring proxy authentication and why?


I had to remove all traces of UIPath on my machine, once I did think I was able to install again and it worked. No idea what the problem was though


This got resolved by reinstalling the trial version again.Seems something related to different versions being installed in my desktop.Thanks for the response guys :slight_smile:


Do we need to reinstall software for data conversion errors? Is it a bug or code issue?


What’s the error message ?


Error message: ‘Permission missing: Launcher’
Unable to access excel files, I have administrator account in my laptop but unable to access files from UiPath


‘Permission missing: Launcher’ error is received in the following scenario:

  • robot is connected to orchestrator with user “abc”
  • on the robot machine you try to start robot (from tray or studio) with user “admin”

Let me know if you have other questions.

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