Sophos Anti-Virus standalone installer release notes
----------------------------------------------------

December 2006

www.sophos.com


Contents
--------

Known problems
Performing a major upgrade of your operating system
Uninstalling Sophos Anti-Virus


Known problems
--------------

* SAV32CLI and upgrading

  If SAV32CLI, the command-line version of Sophos Anti-Virus for
  Windows NT/2000 and later, is being run when an upgrade from Sophos
  Anti-Virus version 4.1x to version 6 begins, the upgrade will fail. Ensure
  that SAV32CLI is not running during an upgrade.

For technical support, visit http://www.sophos.com/support. If you contact
technical support, provide as much information as possible, including Sophos
software version number(s), operating system(s) and patch level(s), and the
exact text of any error messages.


Performing a major upgrade of your operating system
---------------------------------------------------

Before performing a major upgrade of your operating system (e.g. from
Windows XP to Windows Vista), uninstall Sophos Anti-Virus. However, this is
not necessary for minor updates such as hotfixes and service packs.


Uninstalling Sophos Anti-Virus
------------------------------

After uninstalling Sophos Anti-Virus, perform the following steps to ensure
Sophos Anti-Virus is completely removed. The steps refer to use of Registry
Editor. Microsoft has issued the following warning with respect to Registry
Editor:

  "If you use Registry Editor incorrectly, you may cause serious problems that
  may require you to reinstall your operating system. Microsoft cannot
  guarantee that you can solve problems that result from using Registry Editor
  incorrectly. Use Registry Editor at your own risk."

  1. Run Registry Editor, regedit.exe.

  2. Sophos recommends that you back up your current registry settings.

     To do this on Windows XP or later, in the left-hand pane, select "My
     Computer". On the "File" menu, click "Export", and save the registry
     file.

     To do this on Windows 2000, in the left-hand pane, select "My Computer".
     On the "Registry" menu, click "Export Registry File", and save the
     registry file.

  3. In the left-hand pane, find the HKEY_LOCAL_MACHINE\SOFTWARE\Sophos key.

     If Sophos Anti-Virus is the only Sophos product that was installed,
     select the "Sophos" key and press 'Delete'.

     Otherwise, under the "Sophos" key, select the "SAVI" key and press
     'Delete'.

  4. In the left-hand pane, find the HKEY_CURRENT_USER\Software\Sophos key.

     If Sophos Anti-Virus is the only Sophos product that was installed,
     select the "Sophos" key and press 'Delete'.

     Otherwise, under the "Sophos" key, select the "Sophos Anti-Virus" key and
     press 'Delete'. If it is not there, you don't need to take any action.

  5. Close Registry Editor.

  6. Reboot the computer to completely remove Sophos Anti-Virus drivers from
     the computer.

Windows might keep some files (e.g. savonaccesscontrol.sys and
savonaccessfilter.sys) to support the "Last known good boot" option.