What are System Files?

The System File format is used to store critical computer data to be used by an operating system. Some examples include device drivers, system libraries, and other critical configuration details. Important to the functioning of the operating system, companies like Microsoft also implement certain precautions like applying a system attribute to prevent accidental deletion of such files.

Popular System File Extensions


System File Types

File Database Breakdown - System File Extensions


Top System File Extensions

File Extension Total Number of Files Oldest File (Date) Latest File (Date)
ANI 173 drum.ani
(11/02/2006)
pdf2html.ani
(02/12/2020)
EBD 6 systemsf.ebd
(04/11/2009)
ResPriStaticDb.ebd
(04/24/2017)
CUSTOMDESTINATIONS-MS 9 f01b4d95cf55d32a.customDestinations-ms
(04/24/2017)
f01b4d95cf55d32a.customDestinations-ms
(04/24/2017)
XRM-MS 6933 MicrosoftWindowsSafeDocsMain-ppdlic.xrm-ms
(01/21/2008)
osppobjs-spp-plugin-manifest-signed.xrm-ms
(03/04/2020)
OVERRIDETASKS 3 Microsoft.Common.OverrideTasks
(06/02/2012)
Microsoft.Common.OverrideTasks
(03/18/2017)
FTG 1 VBAACCSP.FTG
(05/10/2017)
VBAACCSP.FTG
(05/10/2017)
IDX 48 M1033DSK.IDX
(09/18/2006)
psanbla.idx
(03/05/2020)
ITEMDATA-MS 4 appsFolder.itemdata-ms
(04/24/2017)
appsFolder.itemdata-ms
(05/10/2017)
PROPDESC 35 ie8props.propdesc
(11/21/2010)
VisioCustom.propdesc
(03/04/2020)
ITS 128 MSB1ESEN.ITS
(05/10/2017)
MSB1FREN.ITS
(03/04/2020)
BR2 1 M1033Eva.BR2
(03/18/2017)
M1033Eva.BR2
(03/18/2017)
IEM 4 inetset.iem
(11/02/2006)
inetset.iem
(04/12/2011)
ADMX 2011 WindowsMediaDRM.admx
(11/02/2006)
OneDrive.admx
(03/30/2020)
EFTX 592 Equity.eftx
(05/10/2017)
Urban.eftx
(03/04/2020)
CUR 1353 arrow_im.cur
(09/18/2006)
HandClosed.cur
(02/11/2020)
ADML 19361 WindowsMediaPlayer.adml
(11/02/2006)
OneDrive.adml
(03/30/2020)
MAPIMAIL 7 Mail Recipient.MAPIMail
(09/18/2006)
Mail Recipient.MAPIMail
(03/04/2020)
NT 8 autoexec.nt
(04/14/2008)
config.nt
(04/24/2017)
VXD 13 dsound.vxd
(04/14/2008)
ndphlpr.vxd
(02/21/2020)
JPN 5 noise.jpn
(09/18/2006)
SmartVCD.Jpn
(11/25/2019)
GMMP 20 Graphics.gmmp
(09/18/2006)
Graphics.gmmp
(03/18/2017)
ADM 30 system.adm
(04/14/2008)
AER_1033.ADM
(01/29/2020)
MYDOCS 6 My Documents.mydocs
(04/24/2017)
Documents.mydocs
(04/24/2017)
CNT 98 CNBJHLP2.CNT
(09/18/2006)
speech.cnt
(03/05/2020)
ESN 3 wbcache.esn
(04/14/2008)
wbcache.esn
(04/14/2008)
CLB 12 R000000000001.clb
(09/18/2006)
R000000000004.clb
(02/21/2020)
CDMP 10 wscRGB.cdmp
(09/18/2006)
wscRGB.cdmp
(03/18/2017)
THEME 76 Windows Classic.theme
(09/18/2006)
index.theme
(01/13/2020)
GRL 6 Active.GRL
(11/02/2006)
Pending.GRL
(03/18/2017)
EVTX 82929 Microsoft-Windows-SMBServer%4Security.evtx
(04/24/2017)
Microsoft-Windows-Windows Defender%4Operational.evtx
(03/30/2020)
DBL 5 wpa.dbl
(04/24/2017)
wpa.dbl
(08/29/2019)
SETTINGCONTENT-MS 604 AAA_SystemSettings_DefaultApps_Calendar.settingcontent-ms
(07/24/2013)
NameSpace_Classic_0_FlashPlayerCPLApp.cpl.settingcontent-ms
(04/24/2017)
CI 17 00010001.ci
(04/24/2017)
extension.ci
(01/02/2020)
PROFILE 9 WWAHost_AppexSports.profile
(07/26/2012)
StandardProfileL2.Profile
(12/02/2019)
WPRP 1 provtrace.wprp
(03/18/2017)
provtrace.wprp
(03/18/2017)
HTT 14 PUBPLACE.HTT
(04/24/2003)
eTransmit.htt
(01/20/2020)
FTS 6 VBAACCSP.FTS
(05/10/2017)
BS9532.FTS
(05/10/2017)
DIAGPKG 74 DiagPackage.diagpkg
(07/13/2009)
DiagPackage.diagpkg
(03/18/2017)
UCE 48 kanji_2.uce
(11/02/2006)
korean.uce
(03/18/2017)
LIBRARY-MS 39 RecordedTV.library-ms
(07/14/2009)
CameraRoll.library-ms
(11/23/2019)
AUTOMATICDESTINATIONS-MS 6 f01b4d95cf55d32a.automaticDestinations-ms
(04/24/2017)
5f7b5f1e01b83767.automaticDestinations-ms
(04/24/2017)
HHK 20 scoped_9.hhk
(04/24/2017)
Index.hhk
(11/28/2019)
PPD 1661 BRH260_3.PPD
(09/18/2006)
MSXPSINC.PPD
(03/04/2020)
SEARCHCONNECTOR-MS 12 connectedsearch-protocol.searchconnector-ms
(06/18/2013)
Microsoft Office Outlook.searchconnector-ms
(02/15/2020)
NLD 3 noise.nld
(04/14/2008)
noise.nld
(04/14/2008)
BLF 2 KtmRmTm.blf
(04/24/2017)
KtmRmTm.blf
(05/10/2017)
CWL 1 SAMPLE1.CWL
(05/10/2017)
SAMPLE1.CWL
(05/10/2017)
CHS 6 NOISE.CHS
(09/18/2006)
extension.chs
(01/02/2020)
DESKLINK 7 Desktop (create shortcut).DeskLink
(09/18/2006)
Desktop (create shortcut).DeskLink
(03/04/2020)
DYC 38 XB55X_A.DYC
(09/18/2006)
XWS75P_A.DYC
(09/18/2006)
GID 17 vba_acc.GID
(05/10/2017)
Wspelldlg.GID
(01/10/2020)
TASKS 8 Microsoft.Common.Tasks
(01/21/2008)
Microsoft.Common.Tasks
(10/05/2019)
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