This worked for me in windows 10 and latest solution :

1. Go inside that conda environment ( activate your_env_name )

2. conda install -n your_env_name ipykernel

3. python -m ipykernel install --user --name build_central --display-name "your_env_name"

(NOTE : Don't ignore those semicolons at "your_env_name", in step 3)

This worked for me in windows 10 and latest solution :

1. Go inside that conda environment ( activate your_env_name )

2. conda install -n your_env_name ipykernel

3. python -m ipykernel install --user --name build_central --display-name "your_env_name"

(NOTE : Include the quotes around "your_env_name", in step 3)