Additional versions

6.3.9600.16384 (winblue_rtm.130821-1623)	3.71%
6.3.9600.16384 (winblue_rtm.130821-1623)	0.08%
6.3.9431.0 (winmain_bluemp.130615-1214)	0.21%
6.3.9431.0 (winmain_bluemp.130615-1214)	0.04%
6.2.9200.16384 (win8_rtm.120725-1247)	2.12%
6.2.9200.16384 (win8_rtm.120725-1247)	11.95%
6.2.8400.0 (winmain_win8rc.120518-1423)	0.08%
6.2.8400.0 (winmain_win8rc.120518-1423)	0.08%
6.2.8250.0 (winmain_win8beta.120217-1520)	0.04%
6.2.8102.0 (winmain_win8m3.110823-1455)	0.08%
6.1.7600.16385 (win7_rtm.090713-1255)	20.99%
6.1.7600.16385 (win7_rtm.090713-1255)	37.23%
6.1.7600.16385 (win7_rtm.090713-1255)	0.04%
6.0.6000.16386 (vista_rtm.061101-2205)	5.87%
6.0.6000.16386 (vista_rtm.061101-2205)	1.25%
5.2.3790.3959 (srv03_sp2_rtm.070216-1710)	0.04%
5.2.3790.3959 (srv03_sp2_rtm.070216-1710)	0.08%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	9.66%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.29%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.33%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.42%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.08%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
View more
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.08%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.37%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.12%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.08%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.33%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.08%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.17%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.21%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.25%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.08%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.08%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.08%
5.2.3790.2453 (srv03_sp1_qfe.050525-1536)	0.04%
19 other versions

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

Microsoft Compiled HTML Help is a Microsoft proprietary online help format. It was introduced as the successor to Microsoft WinHelp with the release of Windows 98, and is still supported in Windows 7. Help is delivered as a binary file with the .chm. It contains a set of HTML files, a hyperlinked table of contents, and an index file.