newdot2.dll is a potentially malicious file, which doesn't belong to Windows. It belongs to Internet Explorer Add-on, which is used to generate revenue, increase web traffic and perform similar tasks. For that, this add-on promotes such non standard domains as .shop, .med, .mp3, and similar. Besides, it can fix mistaken or non-existing URL addresses and show search results when people enter keywords in the address bar. However, they shouldn't be trusted 100 percent.
In most of the cases, newdot2.dll is installed unconsciously, behind user's back. This method is not malicious, but it can definitely be called unfair. You can install this file together with these programs: RealOne, AudioGalaxy, KaZaA, iMesh, Grokster, BearShare, Babylon and Radlight. In order to avoid it, stay away from these programs.
Technical security rating is DANGEROUS.
If you to remove newdot2.dll, you must firstly remove these programs: RealOne, AudioGalaxy, KaZaA, iMesh, Grokster, BearShare, Babylon and Radlight. After that, run a full system scan with Reimage or Malwarebytes Malwarebytes.