Versions

7.00.7600.16385 (win7_rtm.090713-1255)	0.04%
7.00.6002.18005 (lh_sp2rtm.090410-1830)	4.52%
7.00.6002.18005 (lh_sp2rtm.090410-1830)	2.07%
7.0.6001.16503 (longhorn(wmbla).080526-2159)	2.04%
6.3.9600.17031 (winblue_gdr.140221-1952)	1.55%
6.3.9600.16384 (winblue_rtm.130821-1623)	0.49%
6.3.9600.16384 (winblue_rtm.130821-1623)	0.04%
6.3.9600.16384 (winblue_rtm.130821-1623)	0.57%
6.3.9600.16384 (winblue_rtm.130821-1623)	0.04%
6.3.9600.16384 (winblue_rtm.130821-1623)	0.87%
6.3.9600.16384 (winblue_rtm.130821-1623)	1.32%
6.3.9431.0 (winmain_bluemp.130615-1214)	0.11%
6.3.9431.0 (winmain_bluemp.130615-1214)	0.04%
6.3.9431.0 (winmain_bluemp.130615-1214)	0.08%
6.3.9431.0 (winmain_bluemp.130615-1214)	0.04%
6.2.9200.16384 (win8_rtm.120725-1247)	1.92%
6.2.9200.16384 (win8_rtm.120725-1247)	7.16%
6.2.9200.16384 (win8_rtm.120725-1247)	7.16%
6.2.9200.16384 (win8_rtm.120725-1247)	0.98%
6.2.8400.0 (winmain_win8rc.120518-1423)	0.08%
6.2.8400.0 (winmain_win8rc.120518-1423)	0.08%
6.2.8400.0 (winmain_win8rc.120518-1423)	0.04%
6.2.8250.0 (winmain_win8beta.120217-1520)	0.04%
6.2.8102.0 (winmain_win8m3.110823-1455)	0.08%
6.2.8102.0 (winmain_win8m3.110823-1455)	0.04%
6.1.7600.16385 (win7_rtm.090713-1255)	1.66%
6.1.7600.16385 (win7_rtm.090713-1255)	2.49%
6.1.7600.16385 (win7_rtm.090713-1255)	0.04%
6.1.7600.16385 (win7_rtm.090713-1255)	17.91%
6.1.7600.16385 (win7_rtm.090713-1255)	3.96%
6.1.7600.16385 (win7_rtm.090713-1255)	10.29%
6.1.7600.16385 (win7_rtm.090713-1255)	1.17%
6.1.7600.16385 (win7_rtm.090713-1255)	1.58%
6.1.7600.16385 (win7_rtm.090713-1255)	0.79%
6.1.7600.16385 (win7_rtm.090713-1255)	0.04%
6.1.7600.16385 (win7_rtm.090713-1255)	0.04%
6.1.7600.16385 (win7_rtm.090713-1255)	0.04%
6.1.7600.16385 (win7_rtm.090713-1255)	0.04%
6.1.7600.16385 (win7_rtm.090713-1255)	0.04%
6.1.7600.16385 (win7_rtm.090713-1255)	0.04%
6.1.7600.16385 (win7_rtm.090713-1255)	14.63%
6.1.7600.16385 (win7_rtm.090713-1255)	5.47%
6.1.7600.16385 (win7_rtm.090713-1255)	0.98%
6.1.7600.16385 (win7_rtm.090713-1255)	0.98%
6.1.7600.16385 (win7_rtm.090713-1255)	0.04%
6.1.7600.16385 (win7_rtm.090713-1255)	0.11%
6.1.7264.0 (win7_rtm.090622-1900)	0.04%
6.0.6001.18000 (longhorn_rtm.080118-1840)	0.04%
6.0.6000.16386 (vista_rtm.061101-2205)	0.34%
6.0.6000.16386 (vista_rtm.061101-2205)	0.64%
View more
6.0.6000.16386 (vista_rtm.061101-2205)	0.26%
6.0.6000.16386 (vista_rtm.061101-2205)	4.60%
6.0.6000.16386 (vista_rtm.061101-2205)	0.34%
6.0.6000.16386 (vista_rtm.061101-2205)	0.04%

This is a Windows system installed file with Windows File Protection (WFP) enabled.

propsys.dll has 54 known versions, the most recent one is 7.00.7600.16385 (win7_rtm.090713-1255). The average file size is about 279.77 KB.

Microsoft Property System for Windows Search, formerly known as Windows Desktop Search (WDS) is an indexed desktop search platform. Windows Search builds a full-text index of files on a computer. Windows Search features incremental search search. The search service consists of several components, including the Gatherer, the Merger, the Backoff Controller, and the Query Processor, among others.