.~~d is Microsoft Windows application log file
Key Features: .~~D File Extension
|Created by||Microsoft Corporation|
What is an .~~D file?
The ~~d file extension is used by Microsoft Windows for generated application logs.
In Windows 98 and Windows Me, the Task Monitor tracks which programs are launched and how they load from disk, and it records the info in the Applog folder. The Defrag utility then uses this info to provide special optimization for the program files you use most often. Rather than rearranging the clusters of these files in sequential order, Defrag rearranges them in the order they're loaded when the program launches.