Description
I am currently using the 60-day Enterprise Trial and I am running into a blocking issue where Python Scope freezes with no errors in a VB • Windows project, even with the smallest possible script.
The workflow never enters the body of the Python Scope, no exceptions are thrown, the timeout is never hit, and nothing appears in Output. I have to manually stop debugging.
Environment Details
UiPath Studio Enterprise Trial (2024/2025 UI)
Project type: VB • Windows
OS: Windows Server (Google Cloud VM)
Python: 3.8.10 (64-bit) installed at C:\Python38
Verified architecture:
python -c “import struct; print(struct.calcsize(‘P’)*8)”
→ 64
DLL present:
C:\Python38\python38.dll
.NET runtimes installed:
dotnet --list-runtimes
Microsoft.NETCore.App 6.0.36
Microsoft.WindowsDesktop.App 6.0.36
(Docs state .NET Desktop Runtime 6+ is required for Python Scope in Windows projects.)
Package: UiPath.Python.Activities (latest)
Python Scope Properties
Following UiPath documentation for Python ≤ 3.9:
Library path (Linux or version>3.9): (empty)
Path: “C:\Python38”
Target: x64
Timeout: 600
Version: Python 3.8 (also tested with Auto)
Minimal Reproducible Example
Inside Python Scope:
Load Python Script → Code:
“import sys” & vbCrLf & _
“def main():” & vbCrLf & _
" return sys.version"
Result: pyScript
Invoke Python Method
Instance: pyScript
Name: “main”
Result: pyObj
Get Python Object
PythonObject: pyObj
TypeArgument: String
Result: pythonVersion
Write Line
Text: pythonVersion
Observed Behavior
Execution reaches Python Scope and stops there.
The Scope never enters the Do block.
No error is generated.
Timeout does not trigger.
No logs are produced.
python.exe never appears in Task Manager.
Studio stays responsive but workflow execution is stuck.
Troubleshooting Already Performed
Reinstalled Python 3.8 (64-bit)
Verified DLL, import, architecture
Tested Python Scope with different folders and work directories
Reinstalled .NET 6 Desktop Runtime
Rebooted VM
Created a brand-new Windows project containing only a Python Scope + the simple script above
Tried Version: Auto vs Python 3.8
Tried different timeouts
Verified permissions and paths
The behavior is identical every time: Python Scope silently freezes before the body executes.
Questions
Is Python Scope officially supported in “Windows” (.NET 6) projects in the latest Enterprise build?
Does UiPath.Python.Activities v1.9+ work with Python 3.8 in Windows projects, or only with Python 3.9+?
Are there known issues with Python Scope initialization inside Windows projects?
Is there a way to enable diagnostic logging for Python Scope startup?
Should I be using Windows-Legacy instead for Python integrations?
Any guidance would be greatly appreciated — this is a critical part of our workflow, and as an Enterprise Trial user I want to confirm whether this is a configuration issue or a known product limitation.
Date
2025-11-28
Related UiPath products
Studio