Hmm… tried uninstalling CUDNN and see now inconsistencies re other packages. Should I remove these first?
conda uninstall cudnn
Collecting package metadata (repodata.json): done
Solving environment: \
The environment is inconsistent, please check the package plan carefully
The following packages are causing the inconsistency:

  - conda-forge/noarch::tensorboardx==1.6=py_0
  - conda-forge/win-64::tensorflow-estimator==1.13.0=py36h39e3cac_0
  - conda-forge/win-64::tensorflow==1.13.1=py36h21ff451_1
  - defaults/win-64::tensorflow-gpu==1.13.1=h0d30ee6_0
  - conda-forge/noarch::tensorflow-hub==0.6.0=pyhe1b5a44_0
  - anaconda/win-64::keras-gpu==2.2.4=0

The main reason I want to stick with this (base) environment is to keep using Open AI Gym with Pytorch, which was an ordeal to install under Windows 10. I suspect that some of these dependencies are due to the installation of Gym.
More on my Conda environment - BTW I have not updated conda as the latest version on another PC completely screwed up my conda so I am reluctant to have to start again from scratch should it happen here…:
     active environment : base
    active env location : G:\Anaconda3
            shell level : 1
       user config file : C:\Users\User\.condarc
 populated config files : C:\Users\User\.condarc
          conda version : 4.7.5
    conda-build version : 3.18.6
         python version : 3.6.6.final.0
       virtual packages : __cuda=10.1
       base environment : G:\Anaconda3  (writable)
           channel URLs : https://conda.anaconda.org/conda-forge/win-64
                          https://conda.anaconda.org/conda-forge/noarch
                          https://conda.anaconda.org/ostrokach-forge/win-64
                          https://conda.anaconda.org/ostrokach-forge/noarch
                          https://conda.anaconda.org/anaconda-fusion/win-64
                          https://conda.anaconda.org/anaconda-fusion/noarch
                          https://repo.anaconda.com/pkgs/main/win-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/win-64
                          https://repo.anaconda.com/pkgs/r/noarch
                          https://repo.anaconda.com/pkgs/msys2/win-64
                          https://repo.anaconda.com/pkgs/msys2/noarch
          package cache : G:\Anaconda3\pkgs
                          C:\Users\User\.conda\pkgs
                          C:\Users\User\AppData\Local\conda\conda\pkgs
       envs directories : G:\Anaconda3\envs
                          C:\Users\User\.conda\envs
                          C:\Users\User\AppData\Local\conda\conda\envs
               platform : win-64
             user-agent : conda/4.7.5 requests/2.22.0 CPython/3.6.6 Windows/10 Windows/10.0.17134
          administrator : False
             netrc file : None
           offline mode : False