In the Windows operating system based computer, you can install many apps or programs that can help you in many ways to complete your personal or professional work. But it is also a truth that you may get many error issues in your Windows time to time while working on those applications. Synsoacc.dll is missing error in Windows is also that type of issue that comes to you due to the missing or damaged Synsoacc.dll file. It is a very annoying error issue which can be rectified easily with the help of some manual methods. But to go through the manual procedure, you should have a great technical knowledge. Therefore, it is recommended that you should download and install Advanced System Repair tool to fix the issue automatically.