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Since Checkmk 2.0, we do provide Python inside the Checkmk Agent (Werk # 10689). If you're using PYTHONHOME or PYTHONPATH, you may run into a similar issue:

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1. Verify if PYTHONHOME and PYTHONPATH are really set.

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   language bash theme RDark
   C:\ProgramData\checkmk\agent\plugins>set | findstr /c:"PYTHON" PYTHONHOME="C:\Program Files\Python38" PYTHONPATH="C:\Program Files\Python38\Lib"

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2. Remove that from the settings:

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   language bash theme RDark
   C:\Program Files (x86)\checkmk\service>set PYTHONHOME= C:\Program Files (x86)\checkmk\service>set PYTHONPATH=

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3. Try again to run the Checkmk updater

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   language bash theme RDark
   C:\Program Files (x86)\checkmk\service>check_mk_agent.exe updater register Using previous settings from C:\ProgramData\checkmk\agent\config\cmk-update-agent.state. Our host name in the monitoring:

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Some background information:

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You're able to run multiple Python Versions on one Windows machine. For that, we see two approaches at the moment.

• Call your scripts with the correct Python version e.g.

  Code Block
  language bash theme RDark
  c:\python\3.8\python.exe c:\python\2.7\python.exe

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• You can create a virtual env for your customized Python version like we do: https://virtualenv.pypa.io/en/latest/

  Code Block
  language bash theme RDark
  'C:\ProgramData\checkmk\agent\modules\python-3\.venv\Scripts\python.exe C:\ProgramData\checkmk\agent\plugins\cmk_update_agent.checkmk.py'

  
  

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