I have installed GFI MailSecurity, or GFI DownloadSecurity. Can I install another virus scanner on the same machine?

The information in this article applies to:

• GFI DownloadSecurity for ISA Server 5
• GFI DownloadSecurity for ISA Server 6
• GFI MailSecurity for Exchange/SMTP 10
• GFI MailSecurity for Exchange/SMTP 7
• GFI MailSecurity for Exchange/SMTP 8
• GFI MailSecurity for Exchange/SMTP 9

Article ID: KBID001559

Query keywords: anti-virus, avapi, Backup, VS API

Anti-virus and backup software make the GFI products mal-function because they deny access to certain files. It is therefore advised to uninstall such software completely from the machine running the GFI MailSecurity or GFI DownloadSecurity

Following are some Microsoft articles regarding the subject if you have installed GFI MailSecurity 8.1 on the same machine as Exchange server (VSAPI mode):

Troubleshooting Exchange w Antivirus Installed
http://support.microsoft.com/default.aspx?scid=kb;en-us;245822
 
Microsoft's Position on Antivirus Solutions for Exchange 2000
http://support.microsoft.com/default.aspx?scid=kb;en-us;306105

Do Not Back Up or Scan Exchange 2000 Drive M
http://support.microsoft.com/default.aspx?scid=kb;en-us;298924

Exchange and antivirus software
http://support.microsoft.com/?id=328841