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Windows: Troubleshooting the installation of the agent

Windows agents install fails

If the Windows agent install fails, you should erase any leftovers from previous installations/attempts and reinstall the agent. Of course as with any Windows troubleshooting, make sure you reboot before you resort to more drastic steps.

The steps to follow are:

  • Make sure the agent isn't running
  • If C:\ProgramData\Nanitor\ exists, remove it
  • If C:\Program Files\Nanitor\ exists, remove it
  • Remove any leftover Registry entries. Search for these and remove if found:
  • HKLM\Software\Nanitor
  • HKLM\system\controlset001\services\nanitor agent
  • HKLM\system\currentcontrolset\services\nanitor agent
  • Any Nanitor values in HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\Folders. An easy way to find these is with the command reg query HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\Folders /v /f nanitor
  • Any Nanitor value or data in HKLM\SOFTWARE\classes\installer\products. An easy way to find these is with the command reg query HKLM\SOFTWARE\classes\installer\products /s /v /k /d /f nanitor

You could also just go to our public Github Repo and grab agent-installation/nanitor-msi-fix.exe which does all of this for you automatically.

Make sure you reboot before trying to install again.