Tai2.dll is a DLL file that is associated with the AOL Topspeed application. When you try to run the application or when you try to open it in your computer, you may see that the Tai2.dll is missing error in Windows comes to your computer screen. Occurring of the Tai2.dll was not found error in your computer is a very critical error issue that you should fix as soon as possible. Due to the occurring of this error issue, you cannot be able to access any applications; your data may be lost severely, etc. In these situations, you should go through some manual or automatic methods. For automatic troubleshooting, you can download and install Advanced System Repair tool in your computer.