Trovigo.com is an unwanted search engine hijacker that renders Internet Options of Windows / Internet Explorer inaccessible. To restore them on an older Windows XP installation, one way that I’ve found to work is to update Internet Explorer to a newer version, aka IE 8 (say via the embedded Windows Update facility or Microsoft Update ...

Seems some Microsoft software (probably Bing bar) version is changing Internet Explorer title bar to write “optimized for Bing and MSN”. To remove this: Use Start/Run or Start/Find and type there regedit then press ENTER to launch the Registry Editor. At the tree on the left navigate to HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main ...