84,285,534 programs installed

Should I remove PI Buffer Subsystem?

What percent of users and experts removed it?
1% remove it99% keep it
Overall Sentiment
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How common is it?
United States Rank #49,920
Reach 0.0006%


VersionDistribution 8.33% 8.33%
3.4.380.79 83.33%

PI Buffer Subsystem


PI Buffer Subsystem is a program developed by OSIsoft. The most used version is 3.4.380.79, with over 98% of all installations currently using this version. It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. The software installer includes 77 files and is usually about 118.69 MB (124,452,658 bytes). In comparison to the total number of users, most PCs are running the OS Windows 7 (SP1) as well as Windows 10. While about 89% of users of PI Buffer Subsystem come from the United States, it is also popular in Canada and Mexico.

Program detailsProgram details

URL: www.osisoft.com
Help link: techsupport.osisoft.com
Installation folder: C:\Program Files\PIPC\
Uninstaller: MsiExec.exe /X{EC8239C4-193E-48D8-A8B9-9E8953A8722C}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 118.69 MB
Language: English (United States)

Program filesFiles installed by PI Buffer Subsystem

  • OSIsoft.Tau.LogService.LogServiceClient.dll - OSIsoft.Tau.LogService.LogServiceClient
  • OSIsoft.Tau.LogService.Contracts.dll - OSIsoft.Tau.LogService.Contracts
  • pi2srvr.dll - PI Software Development Kit (PI SDK PI2 server compatibility module)
  • pisdk.dll - PI SDK 32-bit module
  • PISDKCommon.dll - PISDKCommon 64-bit Module
  • PISDKParse.dll - PISDKParse 64-bit Module
  • PISDKRegistry.dll - PISDKRegistry 64-bit Module
  • PITimeServer.dll - PITimeServer 64-bit Module
  • sdktrace.dll - PI SDK tracing 64-bit Module
  • OSIsoft.Tau.Authentication.dll - OSIsoft.Tau.Authentication
  • pibufss.exe - PI Server - Release Branch (PI Buffer Subsystem)
  • OSISoft.PISDK.Diagnostics.dll - OSISoft.PISDK.Diagnostics
  • piartool.exe - PI Server - HotFix Branch (PI Archive Tool)
  • piconfig.exe - PI Table Configuration Utility
  • pimsgss.exe - PI Message Subsystem
  • pinetmgr.exe - PI Network Manager
  • pintlog.dll - PI Event Viewer DLL
  • OSIsoft.Tau.RetryHandler.dll - OSIsoft.Tau.RetryHandler
  • OSIsoft.PIDataServices.DataAccess.dll - PI Data Services (PI Data Services)
  • MDBTree.ocx - PI-SDK Controls (This file contains the following PI-SDK Controls:MDBTree Control.)
  • OSIsoft.PIDataLink.AFData.dll - PI DataLink (r) (OSIsoft.PIDataLink.AFData)
  • PISDKCtl.ocx - This file contains the following PI-SDK Controls: PI-ServerPickList.
  • policy.1.2.OSIsoft.PISDK.Controls.PIArchiveEditor.dll - PIArchiveEditor
  • apisnap.exe - PI API library (PI API snapshot and archive utility)
  • bufserv.exe - PI buffer server
  • bufutil.exe - PI buffer utility
  • piapi.dll - PI-API 64-bit library
  • pilogsrv.exe - PI log server
  • PISDKDlg.dll - PI-SDK Dialogs (PISDK COM controls and dialogs)
  • policy.1.2.OSIsoft.PISDK.Controls.PISDKCtrlDlg.dll - PISDKCtrlDlg
  • policy.1.2.OSIsoft.PITimeServer.dll - PITimeServer
  • policy.1.3.OSIsoft.PITimeServer.dll
  • policy.1.2.OSIsoft.PISDKCommon.dll - PISDKCommon
  • policy.1.3.OSIsoft.PISDKCommon.dll
  • OSIsoft.Context.Cog.dll - PI Symbols (OSIsoft.Context.Cog)
  • OSIsoft.PISymbols.LogManager.dll - OSIsoft.PISymbols.LogManager
  • OSIsoft.PISymbols.Utilities.dll - OSIsoft.PISymbols.Utilities
  • policy.1.2.OSIsoft.AXPISDKCTL.dll - AXPISDKCTL
  • ipisql.exe - PI Server (IPISQL)
  • pidiag.exe - PI Diagnosis Utility
  • pigetmsg.exe - PI Get Message Utility
  • pilistupd.exe - PI Update Manager List Utility
  • policy.1.2.OSIsoft.AXMDBTREE.dll - AXMDBTREE
  • policy.1.2.OSIsoft.MDBTree.dll - MDBTree
  • AFExplorer.exe - PI AF (PI System Explorer)
  • AFExplorerCommon.dll - AFExplorerCommon
  • AFExport.exe - OSIsoft AFExport Utility
  • AFGetTrace.exe - OSIsoft AFSDK Get Trace
  • AFImport.exe - OSIsoft AFImport Utility
  • AFPlugInAssets.dll - AFPlugInAssets
  • AFPlugInUOM.dll - AFPlugInUOM
  • AFUpdatePlugInConfigurations.exe - AFUpdate PlugIn Configuration Utility
  • OSIsoft.AFTrend.dll - OSIsoft.AF.UI.Trend
  • OSIsoft.I18N.LSTControl.dll - OSIsoft.I18N.LSTControl
  • OSIsoft.PISymbols.SymbolsLite.dll - OSIsoft.PISymbols.WPFtrend
  • policy.1.2.OSIsoft.PISDK.dll - PISDK
  • policy.1.3.OSIsoft.PISDK.dll
  • RegPlugIn.exe - OSIsoft Register AFSDK Plug-In
  • RegPlugIn64.exe
  • SetPISystem.exe - OSIsoft AFSDK Set PISystem

Program behaviorsBehaviors exhibited

5 Services
  • pibufss.exe runs as a service named 'PI Buffer Subsystem' (pibufss).
  • pinetmgr.exe runs as a service named 'PI Network Manager' (pinetmgr).
  • pimsgss.exe runs as a service named 'PI Message Subsystem' (pimsgss).
  • pilogsrv.exe runs as a service named 'PIPC Log Server x64' (pilogsrvX64) "Service to manage the number and size of PI API x64 log files (pipc.log).".
  • bufserv.exe runs as a service named 'PI-Buffer Server x64' (bufservX64) "Service to buffer data sent to a PI server.".

How do I remove PI Buffer Subsystem?

Quickly and completely remove PI Buffer Subsystem from your computer by downloading "Should I Remove It?", its 100% FREE and installs in seconds (click the button below).
Or, you can uninstall PI Buffer Subsystem from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program PI Buffer Subsystem, click it, and then do one of the following:
    • Windows Vista/7/8: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove PI Buffer Subsystem.

Win 7 (SP1) 67%
Win 10 33%
Windows Service? Yes
(Installs a service)
Uninstall it 1%
Keep it 99%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 66.67%
Windows 10 33.33%
Which OS releases does it run on?
Windows 7 Enterprise 41.67%
Windows 7 Professional 16.67%
Windows 8.1 Enterprise 16.67%
Windows 10 Enterprise 8.33%
Windows 10 Pro 8.33%
Windows 7 Ultimate 8.33%

Distribution by countryGeography

89.29% of installs come from the United States
Which countries install it?
  United States 89.29%
  Canada 3.57%
  Mexico 3.57%
  Netherlands 3.57%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Dell 54.55%
Lenovo 18.18%
Hewlett-Packard 18.18%
Intel 9.09%
Common models
LENOVO 2441CQ7 10.00%
LENOVO 10AC001EUS 10.00%
HP Z220 CMT Workstation 10.00%
HP Pavilion TS 14 Noteboo... 10.00%
Dell OptiPlex 990 10.00%
Dell Latitude E6430 10.00%


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