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error while installing tensorflow in conda environment (CondaError: Cannot link a source that does not exist.)

Solved the problem. The env name "root" is for conda <= 4.3, otherwise use:

conda update -n base conda
I hope this helps.
Try to run conda clean --all --yes and conda update anaconda.
Do you have a conda.exe file in the following folder C:\ProgramData\Anaconda3\Scripts\?
Do you use the latest Conda?
Another solution could be to create a conda environments conda create -n name_environment pip python=3.5 and using pip to install tensorflow pip install tensorflow inside the new environment 
after having activated it (activate name_environment).
P.S. I can not write a comment because I do not have enough reputation.
EDIT - Now i can!
                thanks ... tried running conda clean an updated conda but still facing the same problem... I am able to install other libraries but having the problem with this one.  ... worked by creating another environment
– Rushabh
                Jan 5, 2019 at 14:27
                Maybe this can help you: github.com/conda/conda/issues/7713  You could try to use conda config --add pinned_packages defaults::conda You should use that if you have conda from defaults instead of conda-forge and want to make sure it stays that way.   Otherwise, to help you, I/we need more information about your environment
– Elidor00
                Jan 5, 2019 at 15:20
        
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