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K9-MACOPTIMIZER is a pretty popular virus.
You can get it on your computer while downloading it bundled with some free software.
Sadly, most free downloads do not disclose that other programs will be installed, so you are more likely to get K9-MACOPTIMIZER on your PC without your own knowledge.
After being downloaded, K9-MACOPTIMIZER hijacks your browser and changes search settings.
K9-MACOPTIMIZER also causes an appearance of popup ads and browser redirecting.
K9-MACOPTIMIZER is very annoying and hard to get rid of.
Make a full backup of your PC before starting.
Follow the next steps to make your system clean again:
Removal guide for K9-MACOPTIMIZER:
- Uninstall K9-MACOPTIMIZER using Windows uninstallation applet (use Add/Remove Programs or Uninstall Program or Apps & features).
- Open Task Manager and terminate "K9-MACOPTIMIZER" processes.
- Use Windows search to find and remove "K9-MACOPTIMIZER" files and folders.
- Run services.msc and disable a "K9-MACOPTIMIZER" Windows service.
- Execute taskschd.msc to get rid of "K9-MACOPTIMIZER" scheduled tasks.
- Open regedit.exe and delete K9-MACOPTIMIZER registry keys and values.
- Inspect the properties of your desktop and Start menu shortcuts for K9-MACOPTIMIZER presence and "http://" links.
- Open your browser and disable K9-MACOPTIMIZER plugins. Disable all unknown plugins. Reset the browser settings.
- Clean your Recycle bin and temporary files.
- Restart your computer and check results.