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Sophos Anti-Virus for Windows 2000+: upgrade or installation fails with a white-cross on a red-circle on shield and error in ALC.LOG

Issue
During upgrade or installation of Sophos Anti-Virus, a white-cross on a red-circle appears on the Sophos Shield.

When you check in ALC.LOG the following error message can be seen:

Installation of SAVXP could not continue because of a product with the same function is already installed

NOTE: To view the ALC.LOG:

Sophos product and version
Sophos Anti-Virus for Windows 2000+

Operating system
Windows 2003 SBS SP2

What to do

  1. Browse to \Windows\Temp\
  2. Locate the file called 'Sophos Anti-Virus Competitor List.txt'. If you cannot find this file in this location, then run a Windows search for this file.
  3. Within this text file look for Uninstall Registry Key and Product Name. If you no longer need this product uninstall it from your computer, using 'Add/Remove Programs'.

    If you do still require the product, or if it is not listed in 'Add/Remove Programs', please contact Sophos Technical Support for further advice.

If you need more information or guidance, then please contact technical support.