This is a Windows system installed file with Windows File Protection (WFP) enabled.
There are 35 versions of trkwks.dll in the wild, the latest version being 6.3.9600.16384 (winblue_rtm.130821-1623). The average file size is about 92.74 KB. The executable is a .NET framework assembly utilizing the CLR.
You can use the Distributed Link Tracking Server service and the Distributed Link Tracking Client service to track links to files on NTFS-formatted partitions. Distributed Link Tracking tracks links in scenarios where the link is made to a file on an NTFS volume, such as shell shortcuts and OLE links.
(Note, the behaviors below are for all versions of trkwks.dll, select a unique version for details.)
United States installs about 41.08% of Distributed Link Tracking Client.