UiPath Apps

The UiPath Apps Guide

Apps Troubleshooting and FAQs

Message: Connection to Apps service is lost.

When saving Apps from App Studio, the following error message can occur:
"Connection to Apps service is lost."

Possible cause

  1. You've lost internet connection. Apps requires an active internet connection to save changes you make to your app.
  2. The reason for this error can be the fact that the App service uses WebSocket to save the App definition.


First, ensure that you have an active internet connection. If you are still facing issues then:

  1. Allow to have long live connections by making sure you have the connection: Upgrade parameter in the header. This must be done with the help of your IT team.
  2. Work with your IT or network team to understand how WebSocket traffic policies are being handled and alter them as needed.
  3. Allow WebSocket connections by making sure that is not added to your proxy policy. This must be done with the help of your IT team.

Message: Errors in App

When previewing an app, the following error can occur, even if there are no errors:
"Errors in App"

Possible cause

One or more browser extensions can cause this error to occur.


  1. Try previewing the app in a different browser.
  2. Deactivate all extensions from your current browser.

Message: Process(Process_Name) not found.

An error stating a process is not found can occur in runtime, even if the process is available in Orchestrator.

Possible cause

Check the name of the process and make sure that it does not contain an underscore (_) character.


Rename the process and remove all underscore (_) characters.

Issue: Event on page load not working

Setting the control value using the Set Values rule in the Page load event results in not setting the control value properly.


Instead of setting the control value in the Page load event, use the app variable in the Set Values rule and bind the app variables to the control. By doing so, the control value is being set correctly.

Updated 17 days ago

Apps Troubleshooting and FAQs

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