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Disabling Tamper Protection when the Sophos Home user interface is not available. - Advanced Users

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Sophos Home Support
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Applies to: Sophos Home Premium and Free (Windows) 

What is Tamper Protection?

Tamper Protection is a security feature of Sophos Home for Windows,  which prevents the software from being manipulated from outside applications. With Tamper protection enabled, you will not be able to modify the software or stop any of its running services.

Typically, Tamper Protection can be temporarily disabled via the Sophos Home User interface by an Admin user: Sophos Home (Windows) How to disable Tamper protection

In the event that the user interface is not accessible, Tamper Protection can be disabled via Safe Mode

What to Do:

Note: The following steps are intended for advanced users only. Performing these steps incorrectly can cause serious harm to your computer's operating system. If you do not feel comfortable editing the Windows Registry, please contact Sophos Home support for assistance. 

 

Video steps

 

Step-by-Step


Windows 10 and equivalent operating systems

  1. Go to Settings, Update & Security, Recovery under Advanced start-up click Restart now.


     
  2. On Choose an option, click Troubleshoot, then click Advanced options and Command Prompt:


     
  3. Following the restart, select an administrative account to continue and enter the password.
  4. Open Command Prompt.
  5. Type C: and click Enter.
  6. Type cd Windows\System32\drivers and click Enter.
  7. Type ren SophosED.sys SophosED.sys.old and click Enter.
  8. Type exit and click Enter.
  9. Click Continue.
    Once back to normal Windows mode, follow these steps: 

  10. Click Start followed by Run then type services.msc
  11. Right-click the Sophos Anti-Virus service then Properties. 
  12. Set the Startup type to Disabled then click the OK button.
    Repeat for Sophos MCS Agent service
  13. In Run, type regedit.exe then click the OK button.
  14. Back-up the registry. 
  15. Navigate to
     HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Sophos MCS Agent 
    set the Value data of Start to 0x00000004
  16. Go to
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Sophos Endpoint Defense\TamperProtection\Config
     set the Value  data of SAVEnabled and SEDEnabled to 0
  17. Set the Value data of Enabled to 0 in the following:
    • 32-bit: 
      HKEY_LOCAL_MACHINE\SOFTWARE\Sophos\SAVService\TamperProtection
    • 64-it: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Sophos\SAVService\TamperProtection

 

Windows 7

  1. Turn on or restart the computer
  2. Press F8 to open Advanced Boot Options.
  3. Select Repair Your Computer and click Enter.


     
  4. At the System Recovery Options screen, select a language and keyboard input method and click Next.
  5. Select a local administrative account to log on to and click OK.
  6. Under System Recovery Options, click Command Prompt:


     
  7. Open Command Prompt with admin privilege.
  8. Type D: and click Enter.
  9. Type cd Windows\System32\drivers and click Enter.
  10. Type ren SophosED.sys SophosED.sys.old and click Enter.
  11. Type exit and click Enter.
  12. Click Restart.
  13. Once back to normal Windows mode, follow these steps: 
  14. Click Start followed by Run then type services.msc
  15. Right-click the Sophos Anti-Virus service then Properties. 
  16. Let the Startup type to Disabled then click the OK button.
    Repeat for Sophos MCS Agent service
  17. In Run, type regedit.exe then click the OK button.
  18. Back-up the registry. 
  19. Navigate to
     HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Sophos MCS Agent 
    set the Value data of Start to 0x00000004
  20. Navigate to
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Sophos Endpoint Defense\TamperProtection\Config
     set the Value  data of SAVEnabled and SEDEnabled to 0
  21. Set the Value data of Enabled to 0 in the following:
    • 32-bit: 
      HKEY_LOCAL_MACHINE\SOFTWARE\Sophos\SAVService\TamperProtection
    • 64-it: HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Sophos\SAVService\TamperProtection

 

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