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Problem installing Power Automate Desktop

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Posted on by Community Power Pla... Microsoft Employee

Hi,

I'm having some problems of installing Power Automate Desktop.

Installer always fails and I have been digging in to it, but haven't find working solution yet. In error log the issue seems to be the following:

"The installation failed. Service "UIFlowService" failed to start. Verify that you have sufficient privileges to start system services"

I have tried instructions found from internet:

1) Added my own account to log on as a service and made sure that services listed here are present:
https://powerusers.microsoft.com/t5/General-Power-Automate/Service-UIFlowService-UIFlowService-failed-to-start/td-p/550985

2) From Services.msc I have tried to start the service manually without luck. I also tried to change services log on information to my own account or give it local system account rights. Not working.

I'm running Power automate on my personal computer with Win 10 Pro and admin privileges. Does someone have any suggestions what might be wrong here?

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Power Automate Desktop

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msheets Microsoft Employee on at

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Any update here? Running into this same issue 3 weeks later.

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Sarosh Microsoft Employee on at

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The Power Automate Desktop installer puts the installation logs in %temp%\Power_Automate_Desktop_*. If you could share the file, it will give us something to go on.

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Shalu Microsoft Employee on at

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Hello @Anonymous

Please follow the below instructions and let us know, if it helps in fixing the issue:
(i) Ensure the .net version is 4.8 Runtime framework. If not download and install https://dotnet.microsoft.com/download/dotnet-framework/net48
(ii) Complete all pending Windows updates, if any.
(iii) Uninstall ‘Power Automate Desktop” from Control Panel > Programs > Uninstall a Program
(iv) Open File Explorer and navigate to %localappdata% >Microsoft and delete “Power Automate Desktop” folder.
(v) Also, navigate to %programdata% > Microsoft and delete “Power Automate Desktop” folder.
(vi) Download latest setup from PAD and reinstall (as admin if possible)
(vii) If the same issue shows up, restart the system and reinstall using the same setup file.
Note :- If a different setup is used after restarting the pc, the issue will continue.

If the issue persists, check if the logs mentioned as vcredist64. (find using Ctrl+F)
(i) To navigate to logs: %programdata%\microsoft\power automate desktop\logs.
(ii) Then check the control panel. if this 64bit version of visual c++ redist exists. If yes, uninstall it manually and restart the pc.
(iii) Launch the pad installer as admin and install again.

If the C++ approach does not fix the issue, then follow the below steps:
(i) Access the Registry Editor and navigate to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft
(ii) Check if Power Automate Desktop registry exists
(iii) If it doesn't exist, it is a permission issue, you need to allow full control permissions to the Microsoft folder from the path: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft
Right-click on folder -> Permissions -> Full Control
(iv) Create Power Automate Desktop Key in the same path
(v) Now install PAD
(vi) Creating a Registry key with Power Automate Desktop under Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft and give full control permissions to the all users, fixes the issue.

If this post helps, then please Accept it as the solution to help the other members find it more quickly.

Regards,
Shalini M

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john-dund Microsoft Employee on at

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Hi TP13,

Can you try installing agian, and then going into the event viewer (Start menu > Event Viewer) and then go to Windows Logs > Applications, and then see if you can find an error corresponding to starting the UIFlowService, and give the error that is described in the general box?

Thanks,
John

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second_timothy 8 on at

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I have the same problem. Using Win 10 pro. I'm trying to install with full local admin rights.

I was able to add "everyone" to the secpol.msc log in as a service, but it didn't make a difference. Before adding "everyone" I hade this in there:
NT SERVICE\ALL SERVICES
NT SERVICE\UIFlowService

Any other suggestions?

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DonV 50 on at

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FWIW, uninstalling the Visual C++ package solved it for me.

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john-dund Microsoft Employee on at

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Hi second_timothy, can you either paste or send me in a private message what's in your event viewer related to this failure, assuming you have one?

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second_timothy 8 on at

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I read the removal of the visual c++ thing but I guess forgot to do it.

I removed it (I had same version as Shalu's screenshot), rebooted, and then the install worked perfectly.

Thanks!!

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pat1202003 3 on at

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I too am unable to install PAD. I tried what Shalu listed, but it still doesn't install.

Here is what I get in my application Event Log:

UIFlowService
Exception caught during service startup:
System.Net.HttpListenerException (0x80004005): Access is denied
at System.Net.HttpListener.AddAllPrefixes()
at System.Net.HttpListener.Start()
at Microsoft.Flow.RPA.Service.Core.HttpProxy.ProxyServer.Start()
at Microsoft.Flow.RPA.Service.MicrosoftFlowRPAUnattendedService.InitProxyServerComponents(ILocalSessionsHandler localSessionHandler, IConfigurationManager configurationManager)
at Microsoft.Flow.RPA.Service.MicrosoftFlowRPAUnattendedService.OnStart(String[] args)

Also a Sysmon Process Create log if it will help:

Process Create:
RuleName: -
UtcTime: 2021-03-03 22:59:54.704
ProcessGuid: {d2df8052-14ea-6040-7012-000000006500}
ProcessId: 2676
Image: C:\Program Files (x86)\Power Automate Desktop\UIFlowService.exe
FileVersion: 2.5.80.21056
Description: UIFlowService
Product: Microsoft Flow Robotic Process Automation
Company: Microsoft Corporation
OriginalFileName: UIFlowService.exe
CommandLine: "C:\Program Files (x86)\Power Automate Desktop\UIFlowService.exe"
CurrentDirectory: C:\WINDOWS\system32\
User: NT SERVICE\UIFlowService
LogonGuid: {d2df8052-14ea-6040-b41b-e01200000000}
LogonId: 0x12E01BB4
TerminalSessionId: 0
IntegrityLevel: High
Hashes: MD5=2B85BE19FA2C22C27D592BF09B9D1625,SHA256=5C32D270EA4DC1DC4F2E76927DE3F7AEEC160F4353AA7A087C1267F5C3415990,IMPHASH=F34D5F2D4577ED6D9CEEC516C1F5A744
ParentProcessGuid: {d2df8052-b5b5-603e-0b00-000000006500}
ParentProcessId: 900
ParentImage: C:\Windows\System32\services.exe
ParentCommandLine: C:\WINDOWS\system32\services.exe

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Shalu Microsoft Employee on at

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Hello @pat1202003

Please check In Task Manager -> Services tab on the target machine, is UIFlowService running? Related troubleshooting steps if it's not (may need admin privileges / IT assistance):
https://powerusers.microsoft.com/t5/General-Power-Automate/Service-UIFlowService-UIFlowService-failed-to-start/td-p/550985

Also, request you to completely uninstall PAD before re-installing by following the instructions mentioned below:

Uninstall ‘Power Automate Desktop” from Control Panel > Programs > Uninstall a Program
Open File Explorer and navigate to %localappdata% >Microsoft and delete “Power Automate Desktop” folder.
Also, navigate to %programdata% > Microsoft and delete “Power Automate Desktop” folder.
Install the latest version of PAD: https://go.microsoft.com/fwlink/?linkid=2102613
Check the services. Restart the UIFlow services, if it is not running.
If the issue persists, please share the Event viewer logs, if you can find an error corresponding to starting the UIFlowService, and give the error that is described in the general box?

If this post helps, then please Accept it as the solution to help the other members find it more quickly.

Regards,
Shalini M

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