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Ldwf.exe is a process that belongs to the Logitech Download Assistant software. This program is used for downloading and installing Logitech devices and drivers. The ldwf.exe file is located in the C:Program FilesLogitechDownload Assistant folder by default. This process is not a critical Windows component and can be disabled if known to create problems.
When you download and install a Logitech device, such as a webcam or mouse, the Logitech Download Assistant software is automatically installed as well. This program runs in the background and typically doesn't need to be open or running for the devices to work properly. However, if you're having problems with your Logitech devices, you may need to run this program to update the drivers or firmware for your devices.