Problem:

1. Failed to uninstall HIPS from ePO client task
2. Failed to uninstall HIPS manually
3. Forget the HIPS password and cannot communicate with ePO server for replace password

Solution:

-Start the computer in safe mode
-Disable the startup of HIPS Service
-Restart the computer in normal mode.
- Uninstall HIPS Manually - from add/remove program.

If still you failing to uninstall the Hips, 2 options:
1. Download Hips-Uninstaller, For Download Click here (also good in a Partial deletion/uninstall)
     

2.  Uninstall HIPS by the procedure of McAfee go to the link:
https://kc.mcafee.com/corporate/index?page=content&id=KB51699

Open CMD (Command line) and run the command according the product you want to uninstall

McAfee Agent 5.0.1 - 5.0.1.516
 
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{86D55FFD-408E-4F73-8557-157E920A6AC6}
 
Key: UninstallString
 
MsiExec.exe /X{86D55FFD-408E-4F73-8557-157E920A6AC6}

McAfee Agent 5.0.2.333

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{dea2d287-b3f7-4828-8332-3cf31ed15ed7}
 
Key: UninstallString

MsiExec.exe /X{dea2d287-b3f7-4828-8332-3cf31ed15ed7}

Uninstall McAfee Virus Scan 8.8 P2 - 8.8.0.975
 
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\McAfee\ePolicy Orchestrator\Application Plugins\VIRUSCAN8800
 
Uninstall Command
 
msiexec /x {CE15D1B6-19B6-4D4D-8F43-CF5D2C3356FF} REMOVE=ALL REBOOT=R /q

Uninstall McAfee Virus Scan 8.8 P4 - 8.8.0.1247
 
Key: Uninstall Command
 
msiexec /x {CE15D1B6-19B6-4D4D-8F43-CF5D2C3356FF} REMOVE=ALL REBOOT=R /q

 
Uninstall McAfee Virus Scan 8.8 P5 - 8.8.0.1385
 
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\McAfee\ePolicy Orchestrator\Application Plugins\VIRUSCAN8800
 
Key: Uninstall Command
 
msiexec /x {CE15D1B6-19B6-4D4D-8F43-CF5D2C3356FF} REMOVE=ALL REBOOT=R /q

Click on the McAfee Tray icon, Manage Features , Host Intrusion Prevention

In the new windows, click on Task, Unlock User Interface

Write the password
Note: This password was configure on ePO.

Uncheck The box of “Enable Host IPS” and click Apply

Open Programs and Features

Choose McAfee Host Intrusion Prevention right click Uninstall

Note: any warning choose continue or OK

If you received the following message, you probably didn’t disable the McAfee Host Intrusion prevention,I recommend that start over.

Open Programs and Features

Choose McAfee VirusScan Enterprise right click Uninstall

Note: any warning choose continue

Note: From version 5.x there is an option to protect against manually uninstall

- Open command line(cmd)

- Go to Agent installation folder - The default is:
 c:\Program Files\McAfee\Agent\

- run the command: FrmInst.exe /forceuninstall

Open Programs and Features
From the Run-> appwiz.cpl

Choose McAfee Agent, Right click and uninstall.

- Open command line(cmd)

- Go to Agent installation folder - The default is:
 c:\Program Files\McAfee\Common Framework\

- run the command: FrmInst.exe /forceuninstall