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Frequently Asked Questions

CORS Issues

Problem: When developing locally and making requests to UiPath APIs, you may encounter CORS (Cross-Origin Resource Sharing) errors. This happens because browsers block requests from your local development server (e.g., http://localhost:3000) to external APIs due to same-origin policy restrictions.

Solution: Configure a proxy in your development server to forward API requests and avoid CORS issues.

For example, if you are using Vite, you could add the following proxy configuration to your vite.config.ts:

import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'

export default defineConfig({
  plugins: [react()],
  server: {
    proxy: {
      // Replace '/your-org' with your actual organization/tenant path
      '/your-org': {
        target: 'https://cloud.uipath.com',
        changeOrigin: true,
        secure: true,
      },
    },
  },
})

Usage: - Use window.location.origin as your base URL in your application - Replace /your-org with your actual UiPath organization/tenant path

Authentication Errors

Problem: During authentication, you may encounter errors related to invalid redirect URIs, scopes, or other configuration issues.

Error URL Example: 

https://cloud.uipath.com/identity_/web/?errorCode=invalid_request&errorId=eyJDcmWRpcmVjdFVyaSI6bnVsbCwiUmVzcG9uc2VNb2RlIjpudWxsLCJDbGllbnRJZCI6IjhmZjMyM2FlLTAwZTEtNDU2NC1hOGMyLWVmZDg0YWY2Njc1MiJ9fQ

Solution: 1. Extract the Error Details: - Copy the errorId value from the URL (the long encoded string after errorId=) - Go to jwt.io - Paste the errorId value into the "Encoded" section - The decoded payload will show you the specific error details

  1. Example Decoded Error: 
    {
  "Created": 638900000000000000,
  "Data": {
    "DisplayMode": null,
    "UiLocales": null,
    "Error": "invalid_request",
    "ErrorDescription": "Invalid redirect_uri",
    "RequestId": "ABC123XYZ:00000001",
    "ActivityId": "00-11111111111111111111111111111111-2222222222222222-01",
    "RedirectUri": null,
    "ResponseMode": null,
    "ClientId": "00000000-0000-0000-0000-000000000000"
  }
}