Problems installing BOINC

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(Windows) In rare cases, installation may fail because of an existing installation of BOINC. If this happens:

  • Quit BOINC if it's running, and uninstall BOINC using Start/Control Panel/Add and remove programs. Install the new version again.
  • If that fails, reinstall the version of BOINC you were previously running (you can get an older version from the download page). Uninstall it, then install the new version.
  • If that fails, download the Windows Install Clean Up utility from Microsoft and run it. The old BOINC version shows up as either BOINC.msi or as a corrupt icon .msi (it'll be the top option). Click on it to select, then click Remove and Exit. Reboot your computer. Install the new version. (Warning: leave all other .msi files as they are, otherwise you will have problems uninstalling other programs).
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