Trouble updating to Spyder 4.0.0

Question

I am under Windows 10, 64 bits.

I tried several time to update Spyder 4.0.0 with both the Anaconda Prompt and the Anaconda Navigator. It failed. I uninstalled Anaconda and reinstalled it.

Then I ran the Anaconda Prompt as an Administrator and executed :

conda update spyder 

The version of Spyder was 3.3.6. I tried this command :

conda install spyder=4.0.0 

The prompt returned :

Collecting package metadata (current_repodata.json): done Solving environment: failed with initial frozen solve. Retrying with flexible solve. Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source. Collecting package metadata (repodata.json): done Solving environment: failed with initial frozen solve. Retrying with flexible solve. Solving environment: | Found conflicts! Looking for incompatible packages. This can take several minutes.  Press CTRL-C to abort. Finding conflicts:   0%|                                                                       | 0/360 [00:00<?, ?it/s]|Examining hpack:  42%|█████████████████████████▌                                   | 151/360 [00:00<00:00, 1468.80it/s]/Examining jupyter_core:  56%|██████████████████████████████▍                       | 203/360 [00:00<00:00, 1468.80it/- - mparing specs that have this dependency:   0%|                                                | 0/20 [00:00<?, ?it/\ Examining jupyter_core:  57%|██████████████████████████████▌                       | 204/360 [00:20<00:00, 1468.80it/s]|| mparing specs that have this dependency:  10%|████                                    | 2/20 [00:18<02:47,  9.32s/i/ | Comparing specs that have this dependency:  55%|█████████████████████▍                 | 11/20 [01:07<00:55,  6.16s/i- Examining tbb:  73%|███████████████████████████████████████████████▎                 | 262/360 [02:35<01:19,  1.24it/s]-Examining jedi:  81%|███████████████████████████████████████████████████▉            | 292/360 [02:35<00:54,  1.24it/- \ Examining jupyter_client:  90%|████████████████████████████████████████████████▍     | 323/360 [06:03<04:23,  7.12s/i\ \ Comparing specs that have this dependency:   7%|██▋                                     | 1/15 [00:10<02:27, 10.51s/i- Comparing specs that have this dependency:  13%|█████▎                                  | 2/15 [00:21<02:19, 10.73s/i/ | Comparing specs that have this dependency:  27%|██████████▋                             | 4/15 [00:31<01:25,  7.77s/i\ \ Finding conflict paths:   0%|                                                                    | 0/7 [00:00<?, ?it// - Comparing specs that have this dependency:  73%|████████████████████████████▌          | 11/15 [01:21<00:29,  7.40s/i\ | Finding shortest conflict path for jupyter_client[version='>=4.2']:  67%|██████████▋     | 4/6 [00:10<00:01,  1.35it/| - Comparing specs that have this dependency:  80%|███████████████████████████████▏       | 12/15 [01:34<00:23,  7.91s/i- | failed                                                                                                                 /                                                                                                                        \ UnsatisfiableError: The following specifications were found to be incompatible with a past explicit spec that is not an explicit spec in this operation (spyder):    - spyder=4.0.0  The following specifications were found to be incompatible with each other:    Package jedi conflicts for: spyder=4.0.0 -> python-language-server[version='>=0.31.2,<0.32.0'] -> jedi[version='>=0.14.1,<0.16'] jedi jupyterlab_server -> notebook -> ipykernel -> ipython[version='>=4.0'] -> jedi[version='>=0.10'] anaconda==2019.10 -> jedi==0.15.1[build='py37_0|py36_0|py27_0'] ipython -> jedi[version='>=0.10'] qtconsole -> ipykernel[version='>=4.1'] -> ipython[version='>=4.0'] -> jedi[version='>=0.10'] _ipyw_jlab_nb_ext_conf -> ipywidgets -> ipython[version='>=4.0.0'] -> jedi[version='>=0.10'] jupyter_console -> ipython -> jedi[version='>=0.10'] spyder-kernels -> ipykernel -> ipython[version='>=4.0'] -> jedi[version='>=0.10'] widgetsnbextension -> notebook[version='>=4.4.1'] -> ipykernel -> ipython[version='>=4.0'] -> jedi[version='>=0.10'] jupyterlab -> notebook[version='>=4.3.1'] -> ipykernel -> ipython[version='>=4.0'] -> jedi[version='>=0.10'] jupyter -> ipykernel -> ipython[version='>=4.0'] -> jedi[version='>=0.10'] spyder=4.0.0 -> qtconsole[version='>=4.6.0'] -> ipykernel[version='>=4.1'] -> ipython[version='>=5.0'] -> jedi[version='>=0.10'] ipywidgets -> ipython[version='>=4.0.0'] -> jedi[version='>=0.10'] notebook -> ipykernel -> ipython[version='>=4.0'] -> jedi[version='>=0.10'] ipykernel -> ipython[version='>=4.0'] -> jedi[version='>=0.10'] anaconda==2019.10 -> spyder==3.3.6=py27_0 -> jedi[version='>=0.10|>=0.9'] spyder=4.0.0 -> jedi=0.14.1 Package jupyter_client conflicts for: _ipyw_jlab_nb_ext_conf -> jupyterlab -> notebook[version='>=4.3.1'] -> nbconvert -> jupyter_client[version='>=4.2'] widgetsnbextension -> notebook[version='>=4.4.1'] -> nbconvert -> jupyter_client[version='>=4.2'] jupyterlab -> notebook[version='>=4.3.1'] -> nbconvert -> jupyter_client[version='>=4.2'] ipywidgets -> widgetsnbextension[version='>=3.3.0,<3.4.0'] -> notebook[version='>=4.4.1'] -> jupyter_client[version='>=5.2.0|>=5.3.1|>=5.3.4'] jupyterlab_server -> notebook -> jupyter_client[version='>=5.2.0|>=5.3.1|>=5.3.4'] anaconda==2019.10 -> ipykernel==4.10.0=py27_0 -> jupyter_client[version='>=4.1|>=5.2.0|>=5.2.3|>=5.3.1'] jupyter -> ipykernel -> jupyter_client[version='>=4.1|>=4.2|>=5.2.0|>=5.3.1|>=5.3.4'] ipywidgets -> widgetsnbextension[version='>=3.3.0,<3.4.0'] -> notebook[version='>=4.4.1'] -> nbconvert -> jupyter_client[version='>=4.2'] spyder=4.0.0 -> qtconsole[version='>=4.6.0'] -> ipykernel[version='>=4.1'] -> jupyter_client jupyterlab -> notebook[version='>=4.3.1'] -> jupyter_client[version='>=5.2.0|>=5.3.1|>=5.3.4'] spyder=4.0.0 -> nbconvert -> jupyter_client[version='>=4.1|>=4.2|>=5.3.4'] ipywidgets -> ipykernel[version='>=4.5.1'] -> jupyter_client anaconda==2019.10 -> jupyter_client==5.3.3[build='py27_1|py36_1|py37_1'] spyder-kernels -> ipykernel -> jupyter_client jupyter_console -> jupyter_client spyder-kernels -> jupyter_client[version='>=5.2.3|>=5.3.4'] notebook -> nbconvert -> jupyter_client[version='>=4.2'] jupyter_client notebook -> jupyter_client[version='>=5.2.0|>=5.3.1|>=5.3.4'] nbconvert -> jupyter_client[version='>=4.2'] _ipyw_jlab_nb_ext_conf -> ipywidgets -> ipykernel[version='>=4.5.1'] -> jupyter_client[version='>=5.2.0|>=5.3.1|>=5.3.4'] jupyterlab_server -> notebook -> nbconvert -> jupyter_client[version='>=4.2'] widgetsnbextension -> notebook[version='>=4.4.1'] -> jupyter_client[version='>=5.2.0|>=5.3.1|>=5.3.4'] ipykernel -> jupyter_client qtconsole -> ipykernel[version='>=4.1'] -> jupyter_client qtconsole -> jupyter_client[version='>=4.1'] Package jupyter_core conflicts for: anaconda==2019.10 -> jupyter_core==4.5.0=py_0 spyder=4.0.0 -> nbconvert -> jupyter_client[version='>=4.2'] -> jupyter_core[version='>=4.6.0'] nbconvert -> jupyter_client[version='>=4.2'] -> jupyter_core[version='>=4.6.0'] jupyterlab -> notebook[version='>=4.3.1'] -> jupyter_core[version='>=4.4.0|>=4.6.0'] ipywidgets -> ipykernel[version='>=4.5.1'] -> jupyter_client -> jupyter_core[version='>=4.4.0|>=4.6.0'] anaconda-project -> anaconda-client -> nbformat[version='>=4.4.0'] -> jupyter_core jupyter_core anaconda-navigator -> anaconda-client[version='>=1.6'] -> nbformat[version='>=4.4.0'] -> jupyter_core jupyter -> notebook -> jupyter_core[version='>=4.4.0|>=4.6.0'] _ipyw_jlab_nb_ext_conf -> jupyterlab -> notebook[version='>=4.3.1'] -> jupyter_core[version='>=4.4.0|>=4.6.0'] spyder-kernels -> jupyter_client[version='>=5.2.3'] -> jupyter_core[version='>=4.6.0'] widgetsnbextension -> notebook[version='>=4.4.1'] -> jupyter_core[version='>=4.4.0|>=4.6.0'] notebook -> jupyter_core[version='>=4.4.0|>=4.6.0'] ipywidgets -> nbformat[version='>=4.2.0'] -> jupyter_core anaconda-client -> nbformat[version='>=4.4.0'] -> jupyter_core nbformat -> jupyter_core jupyter_console -> jupyter_client -> jupyter_core[version='>=4.6.0'] anaconda==2019.10 -> jupyter_client==5.3.3=py27_1 -> jupyter_core[version='>=4.4.0'] qtconsole -> jupyter_core ipykernel -> jupyter_client -> jupyter_core[version='>=4.6.0'] spyder=4.0.0 -> nbconvert -> jupyter_core jupyter_client -> jupyter_core[version='>=4.6.0'] nbconvert -> jupyter_core jupyterlab_server -> notebook -> jupyter_core[version='>=4.4.0|>=4.6.0'] qtconsole -> jupyter_client[version='>=4.1'] -> jupyter_core[version='>=4.6.0'] Package spyder-kernels conflicts for: spyder=4.0.0 -> spyder-kernels[version='>=1.8.1,<2.0.0'] spyder-kernels anaconda==2019.10 -> spyder-kernels==0.5.2[build='py37_0|py36_0|py27_0'] anaconda==2019.10 -> spyder==3.3.6=py27_0 -> spyder-kernels[version='>=0.5.0,<1'] Package qtconsole conflicts for: anaconda==2019.10 -> qtconsole==4.5.5=py_0 jupyter -> qtconsole anaconda==2019.10 -> jupyter==1.0.0=py27_7 -> qtconsole[version='>=4.2'] spyder=4.0.0 -> qtconsole[version='>=4.6.0'] qtconsole 

When launching the Anaconda Navigator, the Spyder version was still on 3.3.6.

What am I missing to benefit the last version of Spyder ?

EDIT 1:

When I try to use the Anaconda Navigator, it says :

spyder 4.0.0 cannot be installed on this environment

And it proposes other environments to install but I want Spyder to be updated, not installed somewhere else.

EDIT 2: I successfuly change conda to 4.6, but I get these two errors :

FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\brichard\\AppData\\Local\\Continuum\\anaconda3\\Menu\\spyder_shortcut.jsodone 

and :

CondaError: Cannot link a source that does not exist. C:\Users\brichard\AppData\Local\Continuum\anaconda3\Scripts\conda.exe  Running `conda clean --packages` may resolve your problem. 

The conda clean --packages command does not help since the same errors are raised after it is executed.

Answer 1

(Spyder maintainer here) Other users have reported that you need to run

conda update anaconda

and then

conda install spyder=4

to successfully update to version 4.