# Error installing extension

**URL:** <https://forum.knime.com/t/error-installing-extension/90664>\
**Category:** Implemented Fixes\
**Created:** [November 18, 2025, 9:44am UTC](https://forum.knime.com/t/error-installing-extension/90664 "2025-11-18T09:44:46Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![mgirdwood](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/m/a5b964/32.png) [@mgirdwood](https://forum.knime.com/u/mgirdwood)\
**Post date:** [November 18, 2025, 9:44am UTC](https://forum.knime.com/t/error-installing-extension/90664/1 "2025-11-18T09:44:47Z")

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**Description: When attempting to install the latest AI extension the following error message is provided:**  
An error occurred while installing the items  
session context was:(profile=KNIMEProfile, phase=org.eclipse.equinox.internal.p2.engine.phases.Install, operand=null → [R]org.knime.python.llm.channel.bin.win32.x86\_64 5.8.1.v202511051714, action=org.knime.conda.envinstall.action.InstallCondaEnvironment$InstallAction).  
Running InstallCondaEnvironment action failed  
Installing the Pixi environment failed: pixi install failed with exit code 1  
STDOUT:

STDERR:  
Error: × failed to fetch rsa-4.9.1-pyhd8ed1ab\_0.conda  
├─▶ an io error occurred: failed to unpack `\\?\D:\knime_5.81Test\knime- │ full_5.8.1\bundling\.pixi-cache\pkgs\rsa-4.9.1- │ pyhd8ed1ab_0\info\licenses\LICENSE`  
├─▶ failed to unpack `\\?\D:\knime_5.81Test\knime-full_5.8.1\bundling\.pixi- │ cache\pkgs\rsa-4.9.1-pyhd8ed1ab_0\info\licenses\LICENSE`  
├─▶ failed to set mtime for `\\?\D:\knime_5.81Test\knime- │ full_5.8.1\bundling\.pixi-cache\pkgs\rsa-4.9.1- │ pyhd8ed1ab_0\info\licenses\LICENSE`  
╰─▶ The parameter is incorrect. (os error 87)

**Steps to reproduce:**

1. Using the standard update sites in Preference = Error
2. Using the provided Update archive provided in the hacking details = Error
3. 
4. 
5. 

**Actual results:**

**Expected results:**

**Attachments:**

**OS: Windows 11. Using the Full Build Zip**

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<div class="post-metadata">

**Author:** ![mlauber71](https://forum-cdn.knime.com/user_avatar/forum.knime.com/mlauber71/32/73590_2.png) [@mlauber71](https://forum.knime.com/u/mlauber71)\
**Post date:** [November 18, 2025, 9:51am UTC](https://forum.knime.com/t/error-installing-extension/90664/2 "2025-11-18T09:51:10Z")

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There seem to be problems with Python extensions on several occasions. I went thru my history of tickets ([47971](https://knime.zendesk.com/hc/en-gb/requests/47971), [47650](https://knime.zendesk.com/hc/en-gb/requests/47650), [39382](https://knime.zendesk.com/hc/en-gb/requests/39382)). They usually get closed because after a reboot it seems to work. Possibly a Python process is still running in the background.

If one is used to handling updates and versions this is not a big deal, but I assume other people might get irritated.

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**Author:** ![forum](https://forum-cdn.knime.com/user_avatar/forum.knime.com/forum/32/77398_2.png) [@forum](https://forum.knime.com/u/forum)\
**Post date:** [November 18, 2025, 1:00pm UTC](https://forum.knime.com/t/error-installing-extension/90664/3 "2025-11-18T13:00:35Z")

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**Created ticket ID:** QA-1445

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**Author:** ![forum](https://forum-cdn.knime.com/user_avatar/forum.knime.com/forum/32/77398_2.png) [@forum](https://forum.knime.com/u/forum)\
**Post date:** [November 30, 2025, 10:36am UTC](https://forum.knime.com/t/error-installing-extension/90664/4 "2025-11-30T10:36:37Z")

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**Internal ticket ID:** AP-25209  
**Summary:** Make delayed env install default and remove meta requirements  
**Fix version(s):** 5.9.0

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**Author:** ![forum](https://forum-cdn.knime.com/user_avatar/forum.knime.com/forum/32/77398_2.png) [@forum](https://forum.knime.com/u/forum)\
**Post date:** [November 30, 2025, 10:36am UTC](https://forum.knime.com/t/error-installing-extension/90664/5 "2025-11-30T10:36:41Z")

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**Internal ticket ID:** AP-25054  
**Summary:** KNIME cannot be updated to new Eclipse version if Python-based extensions are installed  
**Fix version(s):** 5.9.0

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**Author:** ![forum](https://forum-cdn.knime.com/user_avatar/forum.knime.com/forum/32/77398_2.png) [@forum](https://forum.knime.com/u/forum)\
**Post date:** [November 30, 2025, 10:36am UTC](https://forum.knime.com/t/error-installing-extension/90664/6 "2025-11-30T10:36:48Z")

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