A file of valid vista system is known as shlwapi.dll. The incorrect formatted system settings and wrong windows registry entries are created due to shreggetvaluew shlwapi.dll. There are several fixing/repairing software available on the internet to remove this error from the computer. A direct system shut down or the attack of viruses (malware) also becomes the reason for the development of this error in the computer. It is not quite easy to repair and identify the reasons of this error. It can only be removed through technical expertise or software. It is better to download a best antivirus and to shut down the PC in a correct way to stay away from this error.