Windows operating system consists of so many DLL files. Hlvdd.dll files in one of them. It is a file that is used for the compression and extraction of the file using Voxware Compression Toolkit. However you may get some error issues also while you try to run the applications associated with this DLL file. You may get hlvdd.dll is missing error in Windows due to the missing or corrupt hlvdd.dll file. After the occurring of the hlvdd.dll was not found error in your computer, you will not be able to run the associated application and the computer stuck at certain point. You will also get severe data loss in the system. Therefore, it is very important to fix the issue with the help of some manual or automatic methods. For automatic resolution, you should use Advanced System Repair tool in your computer.