The file e900drv.dll is part of the serial driver for Nikon View 900, an image-viewing program. Nikon View is a program designed to work with Nikon cameras. This file allows the transfer of images through a serial port. Nikon View has gone through many updates since the version that included this driver. If you have a current version of the program, this file may not be needed. In addition, current versions of Nikon View do not support serial transfers. If you get an error involving this file, you may need to tidy up your registry.
The Windows registry contains entries pointing to all the pieces of code a program uses on your computer. Sometimes the entries are not properly removed when a program is uninstalled, and this can cause your registry to give you an error. To fix these errors and prevent future errors, you should regularly clean your registry with ZookaWare PC Cleaner. We make your computer run clean and fast by fixing the registry.