Update - Failed to install SAVXP: A previous version could not...

Question

Hi... 
 I'm receving the following in SEC "00000067 Failed to install SAVXP. A previous version could not be uninstalled" 
 and in the Sophos Antivirus uninstall log 
 CustomAction UninstallDriverFiles64Vista returned actual error code -1079 (note this may not be 100% accurate if translation happened inside sandbox) MSI (s) (38:30) [10:10:19:389]: Product: Sophos Anti-Virus -- Error 1722.There is a problem with this Windows Installer package. A program run as part of the setup did not finish as expected. Contact your support personnel or package vendor. Action UninstallDriverFiles64Vista, location: C:\Windows\SysWOW64\, command: "C:\Program Files (x86)\Sophos\Sophos Anti-Virus\NATIVE.EXE" /lhu "C:\Program Files (x86)\Sophos\Sophos Anti-Virus\SAVONACCESSDRIV.INF" 
 I read a post recommeding copying NATIVE.EXE from the CIDS directory because it was not there, however I receive the same results. 
 Any insight would be much appreciated!

QC · Answer

Hello BillFolger, 
 guess the C:\Program Files (x86)\Sophos\Sophos Anti-Virus\ folder does exist but is pretty empty, isn't it? 
 The following has helped in similar situations (coincidentally I had one case last week) 
 
 stop the Sophos AutopUpdate Service so that it won't interfere 
 copy native.exe from C:\ProgramData\Sophos\AutoUpdate\Cache\savxp
ative\amd64\ to the above mentioned folder 
 do the same for the files in the ...\Cache\savxp\drivers\onaccess\win7_amd64\ , ...\drivers\boottasks\ , and ...\drivers\sdcfilter\win7_amd64\ folders (note: all files go to ...\Sophos Anti-Virus\ not to subfolders) 
 either uninstall Sophos Anti-Virus from the Control Panel 's Programs and Features or simply start the AutoUpdate service, wait for or force an update which should then succeed 
 
 Ideally you should use the files belonging to the installed version (BTW: the logs suggest it's 10.3.11 which is about a year old) but usually it works 
 Christian