Uipath.session.csharp.exe Exception (0xe0434352)

[yuri.santos]

Hello everyone,

I have an automation that didn’t even start. When I checked the production machine, I saw this popup.
UiPath is already updated to one of the latest versions.
Could someone please help?

[sonaliaggarwal47 (Sonali Aggarwal)]

Hi @yuri.santos,

Please refer below thread and verify/correct the issues mentioned:

Job Stopped with unexpected exit code 0xE0434352

@K_Anbarasu Last Time I faced issue on Excel due to full number of rows. I solved by reading chunks of data. possible reasons: The error code 0xE0434352 typically indicates an exception or error within the .NET framework. This error can occur for various reasons, including issues with the macro code, memory limitations, or conflicts with other applications or dependencies. Here are a few steps you can try to troubleshoot and resolve the issue: Check the Macro Code: Review the macro code in…

Also, I would suggest to run your process in debug mode to see at which point/activity in the workflow, it is throwing this error. Then follow the corresponding solution mentioned in above shared thread.

Hope this helps.

Regards
Sonali

[yuri.santos]

Like i said, the automation did not start… it doesnt even have any logs in the orchestrator

[sonaliaggarwal47 (Sonali Aggarwal)]

Hi @yuri.santos,

As mentioned, please start the process in debug mode from studio.

Also enable execution trail from debug menu before kick starting the process in debug mode.

This will help you identify what activity, process is breaking. It can most likely be in initialisation state itself that’s why it seems to you that it didn’t even start.

Regards
Sonali

[singh_sumit (Sumit Singh Tariyal)]

Hey @yuri.santos

The error 0xe0433434 is a generic .NET Framework exception code. In the context of UiPath, this typically means that an unhandled .NET exception occurred during the execution of a process or while starting the UiPath application itself.

1. Repair or Reinstall .NET Framework

• Go to Programs and Features > Find .NET Framework > Choose Repair (if available).
• Or download the latest supported version from Microsoft:
  • .NET Framework 4.8 Download

2. Repair UiPath Studio

• Open Control Panel > Programs and Features.
• Select UiPath Studio > Click Repair.

3. Check Event Viewer for Details

• Open Event Viewer > Windows Logs > Application.
• Look for an error entry near the time of the crash with more context, possibly including:
  • Stack trace
  • Faulting module
  • Application exception message

4. Update or Reinstall Packages

• Open the Manage Packages pane in UiPath.
• Try updating or reinstalling dependencies, especially any custom libraries.

5. Run Studio in Safe Mode

• Launch UiPath Studio in Safe Mode (without loading all extensions) to isolate the problem.
• This can help if extensions or packages are causing the crash.

[yuri.santos]

In debug mode it ran successfully… any other suggestions?

[sonaliaggarwal47 (Sonali Aggarwal)]

@yuri.santos

Thanks for sharing!

Can you please upgrade your project dependencies and see?

Also refer all the points from above thread shared.

Please confirm if it’s a csharp project?

[marian.platonov]

UiPath.Session.csharp.exe is used for session management (for unattended). It has a screenshot feature (saves the screenshots at C:\ProgramData\UiPath\SessionScreenshots) that’s used for troubleshooting in case something fails during session creation.

Can you try upgrade the Studio and Robot to 2025.0.161 from https://download.uipath.com/UiPathStudioCloud.msi and retry?

Do you have any firewall or antivirus that may think that UiPath.Session.csharp.exe is a virus?

Which are the exact steps to replicate that error?

Provide the UiPath Diagnostic Tool logs from the robot VM and mention the time when the issue occurred.