MSG Viewer for Outlook does not contain any adware, and does not intentionally modify any system preferences or browser configurations! Unfortunately, third-party companies like CNET have introduced adware as part of their own bundled installers. For this reason, we recommend only using our authentic installer.
Click here for more information about this 'CNET Installer' Adware, including instructions showing how to avoid it for next time and how to uninstall it.