topic Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message in ArcGIS Pro Questions

PYTHON in ArcGIS Pro 3.5 causes crash, no error message

JohnBobbitt — Tue, 12 Aug 2025 22:40:59 GMT

PYTHON causes immediate program crash with no error message. Single commands from geoprocessing tools e.g. "arcpy.management.GetCount("name"). Cause it. After "enter", the program shuts down immediately.

Thanks a heap,

-jbb

Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message

DanPatterson — Tue, 12 Aug 2025 23:25:23 GMT

Python in ArcGIS Pro—ArcGIS Pro | Documentation begin here

Where are you running python?

A arcgis pro notebook?

command line?

a separate python IDE?

did you import arcpy from wherever?

details are required

Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message

Robert_LeClair — Wed, 13 Aug 2025 17:19:09 GMT

There are two things to consider fixing this issue:
How To: Perform an ArcGIS pro Soft Reset
How To: Perform a Clean Uninstall and Reinstall of ArcGIS Pro

Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message

JohnBobbitt — Wed, 13 Aug 2025 19:24:31 GMT

Thanks, I need to dig a bit deeper. I'll re-post after I figure some things out.

-jbb

Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message

JohnBobbitt — Wed, 13 Aug 2025 20:32:21 GMT

Thanks, some details:

- ArcGIS 3.5, plenty of computer.

- Running the "Getting Started with Python in ArcGIS pro" tutorial

- Running PYTHON through command line through: VIEW | ANALYSIS | GEOPROCESSING | PYTHON | Python window; (see pic)

- On the tutorial file (and other projects) I can sometimes run the simple steps per the tutorial (see pic).

- However, the ArcGIS program often crashes during text entry into the command line prompt. It seems to happen every time a backspace is attempted, during attempts to paste paths, and during delays while typing a command (e.g., searching for a file name). It sometimes happens upon any text input with or without the enter key.

- The crash starts with a 5-10 second freeze (loss of cursor control), then an immediate program shutdown with no error message. During re-start there is sometimes a notification re: back-up newer than saved file, but often the project opens fresh with no indication of the crash.

Any insights? Hard or soft Reset or reinstall?

Thanks a heap,

-jbb

Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message

Robert_LeClair — Wed, 13 Aug 2025 20:35:43 GMT

I would recommend a soft reset first, then test your workflow again. If it still crashes, perform a clean uninstall/reinstall, then test your workflow again. Does the application still error out?

Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message

JohnBobbitt — Thu, 14 Aug 2025 03:08:19 GMT

It crashes about half the time upon any input into the prompt. I've had previous unresolved problems with running some batch tool as well.

I'm the only user on this account, so I'm going to go for a clean install. I really don't want to have to edit the Win 11 registry.

Is there any documentation re: backing up and restoring settings?

Thanks, -jbb

Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message

RTPL_AU — Thu, 14 Aug 2025 04:37:24 GMT

@JohnBobbitt
You sound like a perfect candidate for these Ideas with your "I really don't want to have to edit the Win 11 registry."

https://community.esri.com/t5/arcgis-pro-ideas/provide-a-tool-to-do-a-clean-re-install-of-pro/idi-p/1638240

https://community.esri.com/t5/arcgis-pro-ideas/provide-a-config-profile-backup-amp-validation/idi-p/1632282

Do you have any other Python tools, environment managers, plugins for VS Code etc. that could've affected your default Pro Python install?

Before nuking everything try to create a new Python environment in Pro.

Does your install show a Repair option for your environment?

Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message

DanPatterson — Thu, 14 Aug 2025 08:47:02 GMT

When working with registry entries and folders in the windows specified paths, "rename" instead of delete... the renamed entry is the backup. Clean out temp folders in the users path, eg

C:\Users\...you...\AppData\Local\Temp

as well I find that some python ide s (and maybe the Pro python) use it for temp files.

If the soft reset and hard reset don't work, it would be a Tech support case. You might have remnants of other python installs or other issues that are beyond the scope of the normal recovery procedures.

Good luck

Re: PYTHON in ArcGIS Pro 3.5 causes crash, no error message

JohnBobbitt — Sat, 16 Aug 2025 14:16:13 GMT

I tried and tried, and finally went to ESRI's tech help, through chat which ended up in two lengthy screen-share sessions. A very knowledgeable technician (with a few holds to confer with senior techs) ended up doing a complete uninstall and clean install. No luck, same problem persists.

BUT, I added a new WIN11 user profile and the Python Window seems to be running on it.

I have another screen-share session set up for Monday AM.

Thanks a heap for replies,

-jbb