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"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
When you try to install Sophos Anti-Virus on a computer that previously had a non-Sophos anti-virus product installed, Sophos Anti-Virus fails to install and displays the error:
Error 3000. A previous version of Sophos Anti-Virus already exists, a reboot is required.
Rebooting the computer does not resolve the issue.
First seen in Sophos Anti-Virus for Windows 2000+
A flag file created to track a reboot has not been deleted.
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