Cant install new package via CONDA?

Question

* Pro 2.2.1 (upgraded from prior versions).
* Trying to install Selenium 
* Pro interface, options, python, dont seem to be able to install new packages (greyed out)
* Resorted to firing up proenv.bat as Administraor
* Running conda install -c conda-forge selenium

Full output of console here.

* CondaError: Cannot link a source that does not exist. C:\Program Files\ArcGIS\Pro\bin\Python\pkgs\et_xmlfile-1.0.1-py36_0\Lib\site-packages\et_xmlfile\__pycache__\__init__.cpython-36.pyc
* Attempting to roll back.
*  
* DEBUG menuinst_win32:__init__(199): Menu: name: 'Anaconda${PY_VER} ${PLATFORM}', prefix: 'C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3', env_name: 'arcgispro-py3', mode: 'None', used_mode: 'system'
* DEBUG menuinst_win32:create(323): Shortcut cmd is C:\Users\Simon\AppData\Local\Temp\_MEI40322\python.exe, args are ['C:\Users\Simon\AppData\Local\Temp\_MEI40322\cwp.py', '"C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3"','"C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\python.exe"', '"C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Scripts\jupyter-notebook-script.py"', '%USERPROFILE%']
*  
* CondaError: Cannot link a source that does not exist. C:\Program Files\ArcGIS\Pro\bin\Python\pkgs\et_xmlfile-1.0.1-py36_0\Lib\site-packages\et_xmlfile\__pycache__\__init__.cpython-36.pyc

DanPatterson_Retired · Accepted Answer

The requested file doesn't exist in that path in my install either.

a missed dependency?  did you try --no pin