Error 1721 when I try to remove sophos endpoint protection

Question

Hi, 
 I tried to remove sophos from a virtual server. I removed some components manually but I have still "zombi" sophos parts. 
 On the windows "programs and features" if I try to remove "sophos anti-virus" I get an 1721 error. 
 
 Can you help me please? 
 
 Thanks 
 Regards 
 FM

Gowtham Mani · Answer

Hi FayeM&uuml;ller, 
 Please try the following steps and let me know if that helps.

Open Regedit. 
 Browse to: HKEY_LOCAL_MACHINE\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\ 
 Search just the Uninstall key for: Sophos Anti-Virus. This should find the Sophos Anti-Virus key. 
 Find a machine on which the same version of Sophos Anti-Virus is installed and traverse to C:\Program Files (x86)\Sophos\Sophos Anti-Virus. 
 Copy paste the following files from the above folder to C:\Program Files (x86)\Sophos\Sophos Anti-Virus\ on the problematic machine:
 
 NATIVE.EXE 
 SAVONACCESSDRIV.INF 
 SOPHOSBOOTDRIVER.INF

Note : If the uninstall/install fails on any other .INF, paste them across as well. 
 6. Run the uninstallation/upgrade/migration as normal and it should now succeed. 
 For more details please refer the KBA Error 1721 returned when installing, upgrading or uninstalling Sophos Anti-Virus .