How To Use Fiddler As A Proxy For The Robot Service To Collect Information?

[system]

How to use Fiddler as a proxy for the Robot Service to collect information?

Check whether the Robot is installed in service or user mode with the following command:

sc query "UiRobotSvc" | find /i "failed" 2>&1>nul && echo.'UiPath Robot service is not installed' || (sc query "UiRobotSvc"| find /i "running" 2>&1>nul && echo.UiPath Robot service %RobotVersion% is Running || echo.UiPath Robot service %RobotVersion% is Stopped)

Troubleshooting specific issues involves identifying what exactly the Robot service sends as transactions to Orchestrator. To view these transactions, use Fiddler as a proxy between the Robot Service and Orchestrator.

Follow the below steps below to configure and track the transactions:

1. Identify a config file to edit. The file to be edited depends on the robot version. Create a backup for the selected file before continuing with the editing process.

• 2019.10 or earlier
  • UiPath.Service.Host.exe.config in C:\Program Files (x86)\UiPath\Studio

• 2020.4 and 2020.10
  • proxy.config in C:\Program Files (x86)\UiPath\Studio

Follow the below Steps to Edit the file

2020.10 and before
Uncomment the section and add the localhost as a proxy

2021.4 and higher
Edit the uipath.config file: Using Proxy Address
Add the tag and set the following text.

2. Save

3. Windows Start > Services.msc > Restart Robot Service

4. Download and install (as Admin) Fiddler Classic

5. Open Fiddler

6. Tools > Options

7. Set the HTTPS tab to the following configuration. Ensure Decrypt HTTPS traffic is checked. If these steps aren't followed, the trace file will not be useful.
   
   
   Click Yes:
   
   
   
   
   
   
   
   

8. Set the Connections Tab to the following configuration
   

9. Restart Fiddler

10. Open the Assistant and wait for a connection.

11. Once it is connected, transactions can be seen (Heartbeats, SignalR etc.)
    
    

12. To save, go to File > Save > All Sessions and save it as .saz

13. Restore the uipath.config file with the backup copy
14. Restart the Robot service

Steps to Remove the Certificate Installed in Prior steps:

• Go to Tools > Options > HTTPS tab
• Click the Action button and click Reset All Certificates

• Click OK

• Click Yes

• Click OK

• Click Yes

• Click OK

• Click No

• Click Cancel