Resolve SAT with Clause

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1

I cannot install some packages.
For example :
conda install -vv opencv

With debug (install -vv) I get:
EBUG conda.common._logic:_run_sat(607): Invoking SAT with clause count: 259738
DEBUG conda.resolve:generate_spec_constraints(924): generate_spec_constraints returning with clause count: 259738
DEBUG conda.common._logic:_run_sat(607): Invoking SAT with clause count: 259834
DEBUG conda.resolve:generate_spec_constraints(924): generate_spec_constraints returning with clause count: 259834
…
for hours.
How can I resolve this errors? Is there a switch for better Error-Messages?

conda info:

   active environment : base
    active env location : C:\ProgramData\Anaconda3
            shell level : 1
       user config file : C:\Users\LANetz\.condarc
 populated config files :
          conda version : 4.10.3
    conda-build version : 3.21.6
         python version : 3.9.7.final.0
       virtual packages : __win=0=0
                          __archspec=1=x86_64
       base environment : C:\ProgramData\Anaconda3  (writable)
      conda av data dir : C:\ProgramData\Anaconda3\etc\conda
  conda av metadata url : None
           channel URLs : 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 : C:\ProgramData\Anaconda3\pkgs
                          C:\Users\LANetz\.conda\pkgs
                          C:\Users\LANetz\AppData\Local\conda\conda\pkgs
       envs directories : C:\ProgramData\Anaconda3\envs
                          C:\Users\LANetz\.conda\envs
                          C:\Users\LANetz\AppData\Local\conda\conda\envs
               platform : win-64
             user-agent : conda/4.10.3 requests/2.26.0 CPython/3.9.7 Windows/10 Windows/10.0.19044
          administrator : False
             netrc file : None
           offline mode : False
2

Hello,

Welcome to the Anaconda Community.

I would try this:
conda install -c menpo opencv