Yesterday the Anaconda Navigator recommended the update from version 2.6.6 to the latest version 2.7.0. I executed the update and after a while a message window informed me about the successfull update. The window presented a button for a direct launch of the Navigator. I clicked the button but the Navigator didn’t start.
Further actions taken so far:
Click on the Anaconda Navigator icon on the desktop: Navigator don’t start.
Restart of the computer and click on the Anaconda Navigator icon on the desktop: Navigator don’t start.
Inspection of the launch link in the properties of the Anaconda Navigator icon:
Here I found the following strange entry:
C:\Users\\anaconda3\pythonw.exe C:\Users\\anaconda3\cwp.py C:\Users\\anaconda3 C:\Users\\anaconda3\pythonw.exe C:\Users\\anaconda3\Scripts\anaconda-navigator-script.py
It seems as if the program “pythonw.exe” should be invoked twice!
I checked the referenced components and they are all present at the declared folders.
I changed the icon’s launch link to each one individually but the Navigator didn’t start.
Can you give a hint how to proceed?
I have Windows 11 Pro, Version 25H2, Build 26200.6901
An additional hint for this issue:
I tried to start the Anaconda Navigator manually via CLI:
I got 2 error messages at CLI start.
There is an ImportError which blocks the startup process.
Error while loading conda entry point: conda-libmamba-solver (module ‘libmambapy’ has no attribute ‘QueryFormat’)
Error while loading conda entry point: conda-libmamba-solver (module ‘libmambapy’ has no attribute ‘QueryFormat’)
(base) C:\Users\my_user_name>anaconda-navigator
Traceback (most recent call last):
File “C:\Users\my_user_name\anaconda3\Scripts\anaconda-navigator-script.py”, line 6, in ‘module’
from anaconda_navigator.app.main import main
File “C:\Users\my_user_name\anaconda3\Lib\site-packages\anaconda_navigator\app\main.py”, line 24, in ‘module’
from anaconda_navigator.app.start import start_app # noqa: E402
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “C:\Users\my_user_name\anaconda3\Lib\site-packages\anaconda_navigator\app\start.py”, line 32, in ‘module’
from anaconda_navigator.widgets.main_window import MainWindow
File “C:\Users\my_user_name\anaconda3\Lib\site-packages\anaconda_navigator\widgets\main_window\__init__.py”, line 29, in ‘module’
from anaconda_navigator.api.anaconda_api import AnacondaAPI
File “C:\Users\my_user_name\anaconda3\Lib\site-packages\anaconda_navigator\api\anaconda_api.py”, line 29, in ‘module’
from anaconda_navigator.api.client_api import ClientAPI
File “C:\Users\my_user_name\anaconda3\Lib\site-packages\anaconda_navigator\api\client_api.py”, line 21, in ‘module’
import binstar_client
File “C:\Users\my_user_name\anaconda3\Lib\site-packages\binstar_client\__init__.py”, line 16, in ‘module’
from pkg_resources import parse_version as pv
File “C:\Users\my_user_name\anaconda3\Lib\site-packages\pkg_resources\__init__.py”, line 90, in ‘module’
from jaraco.text import drop_comment, join_continuation, yield_lines
File “C:\Users\my_user_name\anaconda3\Lib\site-packages\setuptools_vendor\jaraco\text\__init__.py”, line 12, in ‘module’
from jaraco.context import ExceptionTrap
File “C:\Users\my_user_name\anaconda3\Lib\site-packages\setuptools_vendor\jaraco\context.py”, line 17, in ‘module’
from backports import tarfile
ImportError: cannot import name ‘tarfile’ from ‘backports’ (C:\Users\my_user_name\anaconda3\Lib\site-packages\backports\__init__.py)
(base) C:\Users\my_user_name>
The last __init__.py file contains only comments:
“This empty file makes the backports namespace package work.
It is the only file included in the ‘backports’ conda package.
Conda packages which use the backports namespace do not include
this file, but depend on the ‘backports’ conda package instead.”