84,488,480 programs installed

Should I remove Baidu Antivirus?

What percent of users and experts removed it?
18% remove it82% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #1,145
United States Rank #4,598
Reach 0.6045%
Lifespan of installation (until removal)
< 16.60 days
489.73 days >
Average installed length: 257.32 days


VersionDistribution 0.01% 0.18% 0.01% 0.01% 0.62% 0.01% 0.02% 0.04% 0.01% 0.01% 0.02% 0.10% 0.01% 0.02% 6.73% 3.91% 0.26% 0.01% 11.73% 0.09% 0.24% 0.61% 1.78% 0.01% 0.01% 0.01% 0.03% 0.28% 0.01% 0.64% 0.27% 0.02% 0.33% 0.03% 0.02% 0.09% 0.16% 0.01% 0.04% 0.01% 0.03% 1.14% 0.12% 0.26% 0.08% 2.67% 0.01% 1.87% 0.29% 1.24% 0.03%
204 versions

Baidu Antivirus

What is Baidu Antivirus?  (from Baidu)

Baidu Antivirus protects your computer against malware, phishing and malicious websites, worms, and trojans. Remove viruses. Free download and permanently free in future use. Baidu Antivirus consists of Antivirus, Cloud Scan, HIPS, Firewall, Anti-phishing.


Baidu Antivirus is a program developed by Baidu. The most used version is, with over 98% of all installations currently using this version. Upon installation and setup, it defines an auto-start registry entry which makes this program run on each Windows boot for all user logins. It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. A scheduled task is added to Windows Task Scheduler in order to launch the program at various scheduled times (the schedule varies depending on the version). The software is designed to connect to the Internet and adds a Windows Firewall exception in order to do so without being interfered with. When installed, it will add a context menu handler to the Windows shell in order to provide quick access to the program. The main program executable is bav.exe. The software installer includes 62 files and is usually about 64.57 MB (67,704,688 bytes). BavUpdater.exe is the automatic update component of the software designed to download and apply new updates should new versions be released. In comparison to the total number of users, most PCs are running the OS Windows 7 (SP1) as well as Windows 10. While about 32% of users of Baidu Antivirus come from Brazil, it is also popular in the United States and Egypt.

Program detailsProgram details

URL: antivirus.baidu.com
Installation folder: C:\Program Files\baidu security\baidu antivirus
Uninstaller: C:\Program Files\Baidu Security\Baidu Antivirus\Uninstall.exe
Estimated size: 64.57 MB

Program filesFiles installed by Baidu Antivirus

Program executable:bav.exe
Name:Baidu Antivirus
Path:C:\Program Files\baidu security\baidu antivirus\bav.exe
Additional files:
  • BavAdvTools.dll - Baidu Antivirus (Baidu Antivirus AdvTools)
  • BavAs.dll - Baidu Antivirus BavAs
  • BavBase.dll - Baidu Antivirus BavBase
  • BavBh.dll - Baidu Antivirus BavBh
  • BavClean.dll - Baidu Antivirus BavClean
  • BavCloud.exe - BavCloud
  • BavCns.dll - Baidu Antivirus BavCns
  • BavCommon.dll - Baidu Antivirus Service
  • BavCs.dll - Baidu Antivirus BavCs
  • BavDd.dll - Baidu Antivirus BavDd
  • BavDs.dll - Baidu Antivirus BavDs
  • BavFi.dll - Baidu Antivirus BavFi
  • bavhm.exe - Baidu Antivirus Hook Monitor
  • BavIPC.dll - Bav IPC Interface
  • BavLib.dll - Baidu Antivirus BavLib
  • BavLSP.dll - Baidu Antivirus LSP
  • BavMem.dll - Baidu Antivirus BavMem
  • BavNp.exe - Baidu Antivirus 2013 Shop Protect
  • Bavnt.dll - Baidu Antivirus BavNt
  • Bavnt64.dll
  • BavOa.dll - Baidu Antivirus BavOa
  • BavPBMisc.dll - Baidu Antivirus Hung check
  • BavPe.dll - Baidu Antivirus BavPe
  • BavPluginRemove.exe - BavPluginRemove
  • bavqu.dll - Baidu Antivirus BavQu
  • BavQv.dll - Baidu Antivirus BavQv
  • BavRr.dll - Baidu Antivirus BavRr
  • BavScan.dll - Baidu Antivirus BavScan
  • BavShx.dll - Baidu Antivirus Bavshx
  • BavShx64.dll
  • BavSig.dll - Baidu Antivirus BavSig
  • BavSk.dll - Baidu Antivirus BavSk
  • BavSs.dll - Baidu Antivirus BavSs
  • BavSu.dll - Baidu Antivirus BavSu
  • BavSvc.exe
  • BavTray.exe - Baidu Antivirus Tray Application
  • BavUa.dll - Baidu Antivirus BavUa
  • bavuhp.dll - Baidu Antivirus BavUhp
  • BavUl.dll - Baidu Antivirus BavUL
  • BavUm.dll - Baidu Antivirus BavUm
  • BavUm64.dll
  • BavUp.dll - Baidu Antivirus BavUp
  • BavUpdater.exe - Baidu Antivirus Updater
  • BavVt.dll - Baidu Antivirus BavVt
  • BavWebClient.exe - Bav Web Client
  • BavWl.dll - Baidu Antivirus BavWl
  • BdApiUtil.dll - Baidu Antivirus BdApi Dynamic Link Library
  • BDrvComm.dll - Baidu Antivirus Hips Driver Communication
  • BETManger.dll - Baidu Antivirus Hips BETManger Dll
  • BEVMApi001.dll - Baidu Antivirus Hips BEVMAPI001 Dll
  • BEVMEngine.dll - Baidu Antivirus BEVMEngine Dll
  • BavBsReport.exe - Baidu (Baidu BlueScreen Reporter)
  • BavDllFilter.dll - Baidu Antivirus DLLFilter DLL
  • BavOpenUnknownFile.exe - Baidu Antivirus OpenUnknownFile Application

Program behaviorsBehaviors exhibited

2 Context Menu Handlers
  • BavShx64.dll added to Windows Explorer under the name 'Baidu_Scan' with a class of {0A93904A-BB1E-4a0c-9753-B57B9AE272CB}.
  • BavShx.dll added to Windows Explorer under the name 'Baidu_Scan' with a class of {0A93904A-BB1E-4a0c-9753-B57B9AE272CB}.
2 Scheduled Tasks
  • Bav.exe is scheduled as a task with the class '{C0FE53F5-9130-417E-83E1-6C54D3C12B6B}' (runs on registration).
  • BavUpdater.exe is scheduled as a task named 'Baidu Antivirus Update' (runs daily at 6:00 PM).
Scheduled Task (Boot/Login)
  • BavTray.exe is automatically launched at startup through a scheduled task named 1.
  • BavSvc.exe runs as a service named 'Baidu Antivirus Service' (BavSvc) "Baidu Antivirus Service".
2 Startup Files (User Run)
  • Bav.exe is loaded in the current user (HKCU) registry as an auto-starting executable named 'Bav' and executes as C:\Program Files\Baidu Security\Baidu Antivirus\\Bav.exe.
  • BavTray.exe is loaded in the current user (HKCU) registry as an auto-starting executable named 'Baidu Antivirus Tray Application' and executes as "C:\Program Files\Baidu Security\Baidu Antivirus\BavTray.exe".
Startup File (All Users Run)
  • BavTray.exe is loaded in the all users (HKLM) registry as a startup file name 'Baidu Antivirus' which loads as "C:\Program Files\Baidu Security\Baidu Antivirus\\BavTray.exe" -auto.
Windows Firewall Allowed Program
  • Bav.exe is added as a firewall exception for 'C:\Program Files\Baidu Security\Baidu Antivirus\\Bav.exe'.

Program resource utilizationResource utilization averages

Memory:928 KB
21.09 MB average
User CPU:0.00031166%
0.015104% average
Memory:24.77 MB
Total CPU:0.0114269311%
Kernel CPU:0.00952583%
User CPU:0.00190110%
Memory:3.78 MB
Total CPU:0.0010440437%
Kernel CPU:0.00072359%
User CPU:0.00032045%
CPU cycles/sec:29,603
I/O reads/min:1.31 KB
I/O writes/min:559 Bytes

How do I remove Baidu Antivirus?

You can uninstall Baidu Antivirus 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/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Baidu Antivirus, click it, and then do one of the following:
    • Windows Vista/7/8/10: 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 Baidu Antivirus.

Win 7 (SP1) 49%
Win 8.1 0%
Automatically starts? Yes
(Found in the run registry)
Uninstall it 18%
Keep it 82%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 62.88%
Windows 10 28.94%
Windows XP 6.91%
Windows Vista 1.23%
Windows Server 2003 0.03%
Which OS releases does it run on?
Windows 7 Ultimate 33.03%
Windows 7 Home Premium 10.43%
Windows 7 Professional 9.96%
Microsoft Windows XP 6.88%
Windows 8.1 Pro 5.41%
Windows 7 Home Basic 4.80%

Distribution by countryGeography

32.50% of installs come from Brazil
Which countries install it?
  Brazil 32.50%
  United States 10.34%
  Egypt 9.66%
  Saudi Arabia 5.96%
  Thailand 4.79%
  Indonesia 3.88%
  DZ 2.81%
  MA 2.50%
  Mexico 2.35%
  Italy 1.78%
  Germany 1.51%
  IQ 1.37%
  Argentina 1.28%
  France 1.19%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Acer 23.25%
Hewlett-Packard 22.74%
Dell 18.56%
ASUS 7.25%
Samsung 7.25%
Lenovo 6.10%
Toshiba 5.08%
Intel 1.09%
American Megatrends 1.05%
Common models
Positivo Positivo MO... 5.38%
HP Pavilion g6 Notebook P... 4.46%
HP Pavilion dv6 Notebook ... 3.25%
Dell Inspiron 3521 2.66%
Gigabyte G41MT-S2PT 2.63%
Dell Inspiron N5110 2.30%

comments1 comment

user comment
user comment
T-Thailandover a year ago
I had initially read many good reviews about this, so I installed it on my personal PC to replace Microsoft's security essentials (MSE). It was good and caught a lot of bugs that MSE didn't catch. So I decided to install it on all the PCs at the office. After a while networking became very slow till all PCs couldn't connect to the server and internet anymore. We hired IT people to check our networking to find no issues. It is only when we revived 1 unused PC that didn't have Baidu is when I realized it may be Baidu Antivirus causing the problem. After removing it from all my PC at the office, the networking revived and functionality came back to normal. It took three months and 2 IT guys and money to just realize it was nothing but Baidu Antivirus causing the problem on my network and office PCs.