UI Path application Start Issue

Hi Team,

I am trying to open UI Path in my system, but it shows a message box showing " object reference not set to an instance of an object". I tried restarting my system but still not working. Please help me out.

Ashish Garg

Did you install any Windows updates recently (especially a .NET Framework pack)?

Updated with Microsoft .Net Framework 4.7.1

Try to uninstall the update KB 4055002 and open UiPath Studio again to see what happens.
Also, what’s your Windows and UiPath Studio versions?

We cannot rollback the updates.
Windows Version:- Window 7 Enterprise
UI Path Version:- 2017.1.6522

win7 is x64 or x86?
the error occurs when starting Studio , right?

win7 x64.

can you send us a log please?
you can create it like this

  • in a cmd windows, open UiPath.DiagTool.exe (should be in the %localappdata%/UiPath/app-XXX folder
  • run it with this parameter : --file=C:\temp\uipath.zip
    make sure temp folder exists on C:\

Logs.zip (131.0 KB)
Please check

can you run it in administrator mode? it should export more than studio&robot logs and that s not enough

We don’t have administrator access.

can you do an Event Viewer export?

How to get that?

its ok, we ve managed to repro

Hi Team,

Any update for my ticket.

Ashish Garg


Your ticket is in progress to be fixed. I will let you know as soon as it is resolved.

Thanks for understanding!

1 Like

Fixed in 18.2 version