SIMATIC WinCC OPC Server V3.9 + SP2

How to uninstall SIMATIC WinCC OPC Server V3.9 + SP2 from your computer

This web page contains thorough information on how to uninstall SIMATIC WinCC OPC Server V3.9 + SP2 for Windows. It was created for Windows by Siemens AG. More information about Siemens AG can be read here. You can see more info on SIMATIC WinCC OPC Server V3.9 + SP2 at http://www.siemens.com/automation/service&support. Usually the SIMATIC WinCC OPC Server V3.9 + SP2 application is placed in the C:\Program Files\Siemens\WinCC directory, depending on the user's option during install. You can uninstall SIMATIC WinCC OPC Server V3.9 + SP2 by clicking on the Start menu of Windows and pasting the command line C:\Program Files\Common Files\Siemens\Bin\setupdeinstaller.exe /x {55A76EBA-4AA0-498E-BC16-47AE04C90A60}. Keep in mind that you might be prompted for administrator rights. WinCCExplorer.exe is the SIMATIC WinCC OPC Server V3.9 + SP2 's main executable file and it occupies circa 1.11 MB (1168608 bytes) on disk.

SIMATIC WinCC OPC Server V3.9 + SP2 contains of the executables below. They take 35.62 MB (37354780 bytes) on disk.

• AutoStartRT.exe (135.22 KB)
• BildAnw.exe (255.72 KB)
• CCAlgIAlarmDataCollector.exe (190.72 KB)
• CcAlgRtServer.exe (120.72 KB)
• CCCleaner.exe (52.72 KB)
• CCClientAPIs.exe (124.72 KB)
• CCConfigStudio.exe (148.22 KB)
• CCCSigRTServer.exe (443.22 KB)
• CCDeltaLoader.exe (737.22 KB)
• CCDMClientHelper.exe (78.22 KB)
• CCDmRuntimePersistence.exe (309.72 KB)
• CCEmergencyWatchRTServer.exe (367.22 KB)
• CCKopApiExe.exe (408.22 KB)
• CCLBMRTServer.exe (206.22 KB)
• CCMcpAutServer.exe (50.22 KB)
• CCMigrator.exe (226.72 KB)
• CCNSInfo2Provider.exe (623.22 KB)
• CCOnlCmp.exe (382.22 KB)
• CCPackageMgr.exe (443.72 KB)
• CcPJob.exe (739.22 KB)
• CCProfileServer.exe (75.72 KB)
• CCProjectDuplicator.exe (107.22 KB)
• CCProjectMgr.exe (1.41 MB)
• CCPtmRTServer.exe (342.72 KB)
• CCRedCodi.exe (150.72 KB)
• CCRtsLoader.exe (103.22 KB)
• CCRunRedCodiCS.exe (27.72 KB)
• CCScriptEditor.exe (494.22 KB)
• CCSplash.exe (101.72 KB)
• CCSsmRTServer.exe (336.72 KB)
• CCStartHWK.exe (19.22 KB)
• CCTextDistributor.exe (293.22 KB)
• CCTextServer.exe (381.72 KB)
• CCTlgServer.exe (96.22 KB)
• CCTMConfiguration.exe (129.22 KB)
• CCTMTimeSync.exe (341.72 KB)
• CCTMTimeSyncServer.exe (300.72 KB)
• CCTMTimeSyncServerV5.exe (132.06 KB)
• CCTMTimeSyncV5.exe (124.05 KB)
• CCUAEditor.exe (766.72 KB)
• CCUASetupDCOM.exe (28.22 KB)
• CCUCSurrogate.exe (264.72 KB)
• CCUsrAcv.exe (1.36 MB)
• CCWinCCMTEditor.exe (475.22 KB)
• CCXREF.Presentation.Editor.exe (127.22 KB)
• CC_DPSRV.EXE (100.72 KB)
• CC_MShh.exe (56.00 KB)
• ChannelWrapperCS.exe (95.83 KB)
• Grafexe.exe (3.40 MB)
• gsccs.exe (448.72 KB)
• gscrt.exe (329.22 KB)
• HMRT.exe (370.22 KB)
• HornCS.exe (466.72 KB)
• LBMCS.exe (424.72 KB)
• MSCS.exe (1.24 MB)
• OPCTags.exe (236.22 KB)
• PassCS.exe (470.22 KB)
• PassDBRT.exe (410.22 KB)
• PassReg.exe (16.72 KB)
• PdlRt.exe (1.03 MB)
• PdlServ.exe (149.72 KB)
• Print1.exe (346.72 KB)
• PrintIt.exe (471.72 KB)
• Projecteditor.exe (357.22 KB)
• ProtCS.exe (660.22 KB)
• PTMCS.exe (342.72 KB)
• Rd1CS.exe (210.22 KB)
• RptRT.exe (172.22 KB)
• script.exe (83.22 KB)
• SDiagRT.exe (166.72 KB)
• setupdcom.exe (44.72 KB)
• SimotionMapper.exe (101.72 KB)
• SSMSettings.exe (117.72 KB)
• TextLibrary.exe (361.22 KB)
• TlgCS.EXE (952.72 KB)
• WinCCChnDiag.exe (27.72 KB)
• WinCCConfigurator.exe (50.72 KB)
• WinCCExplorer.exe (1.11 MB)
• Siemens.Informationserver.ISReady.PluginService.exe (12.50 KB)
• WinCCRtKbdFilterRegister.exe (70.22 KB)
• WinCCRtKbdFilterRegister.exe (70.22 KB)
• WinCCRtKbdFilterRegister.exe (70.22 KB)
• WinCCRtKbdFilterRegister.exe (73.22 KB)
• WinCCRtKbdFilterRegister.exe (73.22 KB)
• WinCCRtKbdFilterRegister.exe (73.22 KB)
• WinCCRtKbdFilterRegister.exe (73.22 KB)
• ccaeprovider.exe (997.50 KB)
• sopcaesrvrwincc.exe (260.00 KB)
• sopcsrvrwincc.exe (343.00 KB)
• sopchdasrvrwincc.exe (332.50 KB)
• OpcUaServerWinCC.exe (733.00 KB)
• CCRT2UA.exe (176.50 KB)
• DA2XML.exe (339.00 KB)
• Opc.Ua.CertificateGenerator.exe (1.08 MB)
• CCRT2XML.exe (176.50 KB)
• CCCAPHServer.exe (20.72 KB)
• CCCAPHServerEditor.exe (50.72 KB)
• ServiceConfigurationWizard.exe (151.72 KB)
• CCCommunicationConfigurator.exe (38.72 KB)
• CCCrossReferenceAssistant.exe (324.72 KB)
• DynWizEdit.exe (173.22 KB)
• CcMetaView.exe (135.22 KB)
• Simulation.exe (267.72 KB)
• Var_Exim.exe (183.22 KB)
• apdiag.exe (100.22 KB)
• CCScriptInspector.exe (354.22 KB)
• DiagServ.exe (96.72 KB)
• PDLCSApiTest.exe (163.22 KB)

...click to view all...

The current web page applies to SIMATIC WinCC OPC Server V3.9 + SP2 version 03.09.0200 only. If planning to uninstall SIMATIC WinCC OPC Server V3.9 + SP2 you should check if the following data is left behind on your PC.

Folders remaining:

• C:\Program Files (x86)\Siemens\WinCC

Usually, the following files remain on disk:

• C:\Program Files (x86)\Siemens\WinCC\aplib\aboutid.h
• C:\Program Files (x86)\Siemens\WinCC\aplib\actprtdf.h
• C:\Program Files (x86)\Siemens\WinCC\aplib\afximpl.h
• C:\Program Files (x86)\Siemens\WinCC\aplib\Alarm\acknowledgemessage.fct
• C:\Program Files (x86)\Siemens\WinCC\aplib\Alarm\AXC_SetFilter.fct
• C:\Program Files (x86)\Siemens\WinCC\aplib\Alarm\GCreateMyOperationMsg.fct
• C:\Program Files (x86)\Siemens\WinCC\aplib\Alarm\gmsgfunc.fct
• C:\Program Files (x86)\Siemens\WinCC\aplib\ALLOCATE\SysFree.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\ALLOCATE\SYSMALLO.ICF
• C:\Program Files (x86)\Siemens\WinCC\aplib\ap_def.h
• C:\Program Files (x86)\Siemens\WinCC\aplib\AP_GLOB.H
• C:\Program Files (x86)\Siemens\WinCC\aplib\AP_ICF.H
• C:\Program Files (x86)\Siemens\WinCC\aplib\APDEFAP.H
• C:\Program Files (x86)\Siemens\WinCC\aplib\apgenapi.h
• C:\Program Files (x86)\Siemens\WinCC\aplib\app_init.h
• C:\Program Files (x86)\Siemens\WinCC\aplib\AppMem.H
• C:\Program Files (x86)\Siemens\WinCC\aplib\APPRTAPI.H
• C:\Program Files (x86)\Siemens\WinCC\aplib\APRTBL.H
• C:\Program Files (x86)\Siemens\WinCC\aplib\ARCHCLNT.H
• C:\Program Files (x86)\Siemens\WinCC\aplib\ARCHCNST.H
• C:\Program Files (x86)\Siemens\WinCC\aplib\BDTools.h
• C:\Program Files (x86)\Siemens\WinCC\aplib\bpcfunc.xml
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\isalnum.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\isalpha.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\isdigit.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\isgraph.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\islower.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\isprint.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\ispunct.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\isspace.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\isupper.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\isxdigit.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\tolower.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Ctype\toupper.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\acos.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\asin.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\atan.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\atan2.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\ceil.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\cos.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\cosh.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\exp.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\fabs.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\floor.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\fmod.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\frexp.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\ldexp.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\log.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\log10.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\modf.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\pow.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\sin.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\sinh.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\sqrt.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\tan.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Math\tanh.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_ismbcalnum.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_ismbcalpha.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_ismbcdigit.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_ismbcgraph.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_ismbclower.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_ismbcprint.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_ismbcpunct.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_ismbcspace.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_ismbcupper.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbclen.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbctolower.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbctoupper.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbscat.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbschr.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbscmp.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbscpy.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbscspn.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsdec.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsicmp.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsinc.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbslen.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsncat.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsncmp.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsncpy.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsnicmp.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbspbrk.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsrchr.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsspn.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbsstr.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Mbstring\_mbstok.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Memory\memchr.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Memory\memcmp.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Memory\memcpy.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Memory\memmove.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Memory\memset.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Stdio\Char_Io\fgetc.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Stdio\Char_Io\fgets.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Stdio\Char_Io\fputc.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Stdio\Char_Io\fputs.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Stdio\Char_Io\getc.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Stdio\Char_Io\putc.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Stdio\Char_Io\ungetc.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Stdio\Directio\fread.icf
• C:\Program Files (x86)\Siemens\WinCC\aplib\C_BIB\Stdio\Directio\fwrite.icf

You will find in the Windows Registry that the following keys will not be cleaned; remove them one by one using regedit.exe:

• HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Uninstall\{55A76EBA-4AA0-498E-BC16-47AE04C90A60}WinCCOPCServer

Open regedit.exe in order to delete the following registry values:

• HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache\C:\Program Files (x86)\Siemens\WinCC\bin\CCConfigStudio.exe
• HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache\C:\Program Files (x86)\Siemens\WinCC\bin\PdlRt.exe
• HKEY_CLASSES_ROOT\Local Settings\Software\Microsoft\Windows\Shell\MuiCache\C:\Program Files (x86)\Siemens\WinCC\bin\WinCCExplorer.exe
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCAlgIAlarmDataCollector\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCAlgRtServer\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCCSigRTServer\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCDeltaLoader\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCLBMRTServer\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCNSInfo2Provider\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCOPC.UAWrapper\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCOPC.XMLWrapper\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCPackageMgr\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCProfileServer\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCProjectMgr\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCPtmRTServer\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCSsmRTServer\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCTextServer\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCTlgServer\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCTMTimeSyncServer\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CCUsrAcv\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Information Server Plugin Service\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\OpcUaServerWinCC\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\XR_CCOPC.UAWrapper\ImagePath
• HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\XR_CCOPC.XMLWrapper\ImagePath

A way to remove SIMATIC WinCC OPC Server V3.9 + SP2 from your computer using Advanced Uninstaller PRO

SIMATIC WinCC OPC Server V3.9 + SP2 is a program released by Siemens AG. Frequently, users try to erase it. This is hard because uninstalling this manually requires some know-how regarding removing Windows programs manually. The best EASY way to erase SIMATIC WinCC OPC Server V3.9 + SP2 is to use Advanced Uninstaller PRO. Here is how to do this:





1. If you don't have Advanced Uninstaller PRO on your system, add it. This is good because Advanced Uninstaller PRO is the best uninstaller and general tool to clean your computer.

DOWNLOAD NOW

• visit Download Link
• download the program by pressing the DOWNLOAD NOW button
• install Advanced Uninstaller PRO

2. Start Advanced Uninstaller PRO. Take some time to admire Advanced Uninstaller PRO's interface and wealth of functions available. Advanced Uninstaller PRO is a very good program.

3. Click on the General Tools button


4. Press the Uninstall Programs feature


5. A list of the applications existing on your PC will be shown to you

6. Scroll the list of applications until you locate SIMATIC WinCC OPC Server V3.9 + SP2 or simply click the Search feature and type in "SIMATIC WinCC OPC Server V3.9 + SP2 ". If it exists on your system the SIMATIC WinCC OPC Server V3.9 + SP2 app will be found automatically. When you click SIMATIC WinCC OPC Server V3.9 + SP2 in the list of applications, the following information regarding the program is made available to you:

• Safety rating (in the left lower corner). The star rating explains the opinion other people have regarding SIMATIC WinCC OPC Server V3.9 + SP2 , ranging from "Highly recommended" to "Very dangerous".
• Opinions by other people - Click on the Read reviews button.
• Details regarding the program you want to uninstall, by pressing the Properties button.

For instance you can see that for SIMATIC WinCC OPC Server V3.9 + SP2 :

• The publisher is: http://www.siemens.com/automation/service&support
• The uninstall string is: C:\Program Files\Common Files\Siemens\Bin\setupdeinstaller.exe /x {55A76EBA-4AA0-498E-BC16-47AE04C90A60}

7. Click the Uninstall button. A confirmation dialog will come up. Confirm the uninstall by pressing the Uninstall button. Advanced Uninstaller PRO will automatically uninstall SIMATIC WinCC OPC Server V3.9 + SP2 .


8. After uninstalling SIMATIC WinCC OPC Server V3.9 + SP2 , Advanced Uninstaller PRO will ask you to run an additional cleanup. Click Next to proceed with the cleanup. All the items that belong SIMATIC WinCC OPC Server V3.9 + SP2 that have been left behind will be found and you will be asked if you want to delete them. By removing SIMATIC WinCC OPC Server V3.9 + SP2 with Advanced Uninstaller PRO, you are assured that no registry items, files or folders are left behind on your disk.

Your PC will remain clean, speedy and ready to take on new tasks.

Geographical user distribution

Disclaimer

This page is not a recommendation to uninstall SIMATIC WinCC OPC Server V3.9 + SP2 by Siemens AG from your computer, we are not saying that SIMATIC WinCC OPC Server V3.9 + SP2 by Siemens AG is not a good software application. This text simply contains detailed info on how to uninstall SIMATIC WinCC OPC Server V3.9 + SP2 supposing you want to. Here you can find registry and disk entries that Advanced Uninstaller PRO stumbled upon and classified as "leftovers" on other users' computers.